The Wave Nature of Light Made up of. Waves of fields at right angles to each other. Wavelength = Frequency =, measured in

Size: px
Start display at page:

Download "The Wave Nature of Light Made up of. Waves of fields at right angles to each other. Wavelength = Frequency =, measured in"

Transcription

1 Chapter 6 Electronic Structure of Atoms The Wave Nature of Light Made up of. Waves of fields at right angles to each other. Wavelength = Frequency =, measured in Kinds of EM Waves There are many different Radio waves, microwaves, x rays and gamma rays are all examples. Light is only the part our eyes can detect. The speed of light in a vacuum is x 10 8 m/s = c What is the wavelength of light with a frequency 5.89 x 10 5 Hz? What is the frequency of blue light with a wavelength of 484 nm? In 1900 Matter and energy were seen as different from each other in fundamental ways. Matter was Energy could come in, with any frequency. Max Planck found that as the cooling of hot objects couldn t be explained by viewing energy as a wave. Hot Objects and the Quantization of Energy Planck found came in chunks with size. where n is an integer. and h is Planck s constant h = x J-s these packets of hn are called. The Photoelectric Effect - Einstein is next Light shining on a clean metal surface causes the surface to emit electrons. Said electromagnetic radiation is quantized in called. Each photon has energy = Combine this with E = mc 2 You get the apparent mass of a photon. m =

2 You Try It Calculate the energy of one photon of yellow light whose wavelength is 589 nm. Which is it? Is energy a wave like light, or a particle? Concept is called the. What about the other way, is matter a wave? Matter as a Wave Using the velocity v instead of the we get. De Broglie s equation = Can calculate the wavelength of an object. The quantity mv for any object is called its momentum De Broglie used the term You Try It What is the wavelength of an electron moving with a speed of 5.97 x 10 6 m/s? The mass of an electron is 9.11 x g. Diffraction When light passes through, or reflects off, a series of thinly spaced line, it creates a. because the waves interfere with each other. What will an electron do? It has mass, so it is. A particle can only go through one hole. A wave through both holes. An electron, and makes an interference pattern. It behaves like a wave. Other matter has wavelengths too short to notice. Spectrum The range of frequencies present in light. White light has All the colors are possible. A rainbow. Hydrogen spectrum Emission spectrum because these are the colors it gives off or emits. Called a There are just a few discrete lines showing

3 What this means Only certain energies are allowed for the hydrogen atom. Can only give off certain energies. Use Energy in the in the atom is quantized. Neils Bohr Developed the quantum model of the hydrogen atom. He said the atom was like The electrons were attracted to the nucleus because of opposite charges. Didn t fall in to the nucleus because it was moving around. The Bohr Ring Atom He didn t know why but only certain energies were allowed. He called these allowed energies. Putting Energy into the atom moved the electron from the nucleus. From When it returns to ground state it gives off of a certain energy Give it some thought. As the electron in a hydrogen atom mumps from n=3 orbit to the n=7 orbit, does it absorb energy or emit energy? The Bohr Model Doesn t work for all atoms. Only works for Electrons don t move in circles. The quantization of energy is right, but not because they are circling like planets. Limitations to the Bohr Model Bohr model offers an explanation for the line spectrum of the hydrogen atom, it cannot explain the spectra of the other atoms. Important step along the way toward the development of a more comprehensive model 1. Electrons exist only in certain, described by quantum numbers 2. Energy is involved in moving an electron from. The Quantum Mechanical Model A totally new approach. De Broglie said matter could be. De Broglie said they were like. The vibrations of a stringed instrument.

4 What s Possible? You can only have a if you have complete waves. There are only certain allowed waves. In the atom there are certain allowed waves called Erwin Schroedinger described the of the electron. Much math but what is important is the solution. Schroedinger s Equation The is a F(x, y, z) Solutions to the equation are called. These are not Bohr orbits. Each solution is tied to certain energy. These are the. There is a limit to what we can know German physicist Werner Heisenberg proposed that the dual nature of matter places a fundamental limitation on how precisely we can know both the and the of any object. The Heisenberg Uncertainty Principle. Mathematically is the uncertainty in the position. is the uncertainty in the momentum. the minimum uncertainty Examples What is the uncertainty in the position of an electron, mass 9.31 x kg with an uncertainty in the speed of.100 m/s? What is the uncertainty in the position of a baseball, mass.145 kg with an uncertainty in the speed of.100 m/s Making sense of it all Because the diameter of a hydrogen atom is only about 1 x m, the uncertainty is an order of magnitude greater than the size of the atom. With the baseball, the uncertainty is so small that it would be inconsequential. What does Schroedinger s Wave Function mean? It is not possible to visually map it.

5 The square of the function is the of finding an electron near a particular spot. Best way to visualize it is by mapping the places where the electron is likely to be found. Defining the size The The size that encloses 90% to the total electron probability. NOT at a certain distance, but a most likely distance. For the first solution it is a Quantum Numbers There are many solutions to Schroedinger s equation Each solution can be described with 4 quantum numbers that describe some aspect of the solution. 1. (n) size and energy of an orbital. Has integer values >0 2. (l) shape of the orbital. integer values from 0 to n-1 l = 0 is called s l = 1 is called p l =2 is called d l =3 is called f l =4 is called g Value of l Letters used 3 (m l) Integer values between - l and + l, including zero. Describes the orientation of the orbital in space. 4. (m s) Can have 2 values. either +1/2 or -1/2 Give it some thought What is the difference between an ORBIT in the Bohr model and an ORBITAL in the quantum mechanical model? Terms the collection of orbitals with the same value of n the set of orbitals that have the same n and l values For example, the orbitals that have n=3, l=2 are called 3d orbitals and are in the 3d subshell.

6 Electron Configurations no 2 electrons can have the same set of 4 quantum numbers. at most there can only be 2 electrons in a single orbital. electrons will fill the lowest energy level first for orbitals with equal energy, electrons will occupy singly to the maximum extent possible with parallel spin before pairing up. Details Elements in the same column have the same. Put in columns because of similar properties. Similar properties because of electron configuration. Noble gases have energy levels. Transition metals are filling the. Exceptions Cr = [Ar] 4s 1 3d 5 Half filled orbitals. Scientists aren t sure of why it happens same for Cu [Ar] 4s 1 3d 10 More Exceptions: Lanthanum La: [Xe] 6s 2 5d 1 Cerium Ce: [Xe] 6s 2 4f 1 5d 1 Promethium Pr: [Xe] 6s 2 4f 3 5d 0 Gadolinium Gd: [Xe] 6s 2 4f 7 5d 1 Lutetium Pr: [Xe] 6s 2 4f 14 5d 1 We ll just pretend that all except Writing Electron Configurations Write the electron configuration and orbital diagram for Iron Write the electron configuration and orbital diagram using the short-hand method for Barium.

Chapter 6. Electronic Structure of Atoms

Chapter 6. Electronic Structure of Atoms Chapter 6 Electronic Structure of Atoms 6.1 The Wave Nature of Light Made up of electromagnetic radiation. Waves of electric and magnetic fields at right angles to each other. Parts of a wave Wavelength

More information

Chapter 7. Atomic Structure

Chapter 7. Atomic Structure Chapter 7 Atomic Structure Light Made up of electromagnetic radiation. Waves of electric and magnetic fields at right angles to each other. Parts of a wave Wavelength Frequency = number of cycles in one

More information

Light. Chapter 7. Parts of a wave. Frequency = ν. Kinds of EM waves. The speed of light

Light. Chapter 7. Parts of a wave. Frequency = ν. Kinds of EM waves. The speed of light Chapter 7 Atomic Structure Light Made up of electromagnetic radiation Waves of electric and magnetic fields at right angles to each other. 1 2 Parts of a wave Wavelength λ Frequency = ν Frequency = number

More information

The Electron Cloud. Here is what we know about the electron cloud:

The Electron Cloud. Here is what we know about the electron cloud: The Electron Cloud Here is what we know about the electron cloud: It contains the subatomic particles called electrons This area accounts for most of the volume of the atom ( empty space) These electrons

More information

Introduction. Electromagnetic Waves. Electromagnetic Waves

Introduction. Electromagnetic Waves. Electromagnetic Waves Introduction Much of the information we know about electrons comes from studies of interactions of light and matter. In the early 1900 s, scientists discovered that light has properties of both a wave

More information

Atoms, Electrons and Light MS. MOORE CHEMISTRY

Atoms, Electrons and Light MS. MOORE CHEMISTRY Atoms, Electrons and Light MS. MOORE CHEMISTRY Atoms Remember Rutherford??? What did he discover with his gold foil experiment. A: Atoms contain a dense nucleus where the protons and neutrons reside. ATOMS

More information

Chapter 6: The Electronic Structure of the Atom Electromagnetic Spectrum. All EM radiation travels at the speed of light, c = 3 x 10 8 m/s

Chapter 6: The Electronic Structure of the Atom Electromagnetic Spectrum. All EM radiation travels at the speed of light, c = 3 x 10 8 m/s Chapter 6: The Electronic Structure of the Atom Electromagnetic Spectrum V I B G Y O R All EM radiation travels at the speed of light, c = 3 x 10 8 m/s Electromagnetic radiation is a wave with a wavelength

More information

Unit 4. Electrons in Atoms

Unit 4. Electrons in Atoms Unit 4 Electrons in Atoms When were most of the subatomic particles discovered? Who discovered densely packed nucleus surrounded by fast moving electrons? Rutherford s Model Major development Lacked detail

More information

Yellow. Strontium red white. green. yellow violet. green. red. Chapter 4. Arrangement of Electrons in Atoms. Table of Contents

Yellow. Strontium red white. green. yellow violet. green. red. Chapter 4. Arrangement of Electrons in Atoms. Table of Contents Chapter 4 Arrangement of Electrons in Atoms Table of Contents Section 1 Section 2 Section 3 The Development of a New Atomic Model The Quantum Model of the Atom Electron Configurations Sodium Yellow Strontium

More information

Light. October 16, Chapter 5: Electrons in Atoms Honors Chemistry. Bohr Model

Light. October 16, Chapter 5: Electrons in Atoms Honors Chemistry. Bohr Model Chapter 5: Electrons in Atoms Honors Chemistry Bohr Model Niels Bohr, a young Danish physicist and a student of Rutherford improved Rutherford's model. Bohr proposed that an electron is found only in specific

More information

CHAPTER 4. Arrangement of Electrons in Atoms

CHAPTER 4. Arrangement of Electrons in Atoms CHAPTER 4 Arrangement of Electrons in Atoms 4.1 Part I Development of a New Atomic Model 4.1 Objectives 1. Explain the mathematical relationship among the speed, wavelength, and frequency of electromagnetic

More information

UNIT 4 Electrons in Atoms. Advanced Chemistry 235 Lanphier High School Mr. David Peeler

UNIT 4 Electrons in Atoms. Advanced Chemistry 235 Lanphier High School Mr. David Peeler UNIT 4 Electrons in Atoms Advanced Chemistry 235 Lanphier High School Mr. David Peeler Section 4.1 Models of the Atom OBJECTIVES: Identify the inadequacies in the Rutherford atomic model. Section 4.1 Models

More information

Ch. 7 The Quantum Mechanical Atom. Brady & Senese, 5th Ed.

Ch. 7 The Quantum Mechanical Atom. Brady & Senese, 5th Ed. Ch. 7 The Quantum Mechanical Atom Brady & Senese, 5th Ed. Index 7.1. Electromagnetic radiation provides the clue to the electronic structures of atoms 7.2. Atomic line spectra are evidence that electrons

More information

Chapter 6 Electronic Structure of Atoms. 許富銀 ( Hsu Fu-Yin)

Chapter 6 Electronic Structure of Atoms. 許富銀 ( Hsu Fu-Yin) Chapter 6 Electronic Structure of Atoms 許富銀 ( Hsu Fu-Yin) 1 The Wave Nature of Light The light we see with our eyes, visible light, is one type of electromagnetic radiation. electromagnetic radiation carries

More information

Chapter 7 Atomic Structure -1 Quantum Model of Atom. Dr. Sapna Gupta

Chapter 7 Atomic Structure -1 Quantum Model of Atom. Dr. Sapna Gupta Chapter 7 Atomic Structure -1 Quantum Model of Atom Dr. Sapna Gupta The Electromagnetic Spectrum The electromagnetic spectrum includes many different types of radiation which travel in waves. Visible light

More information

Chapter 5. The Electromagnetic Spectrum. What is visible light? What is visible light? Which of the following would you consider dangerous?

Chapter 5. The Electromagnetic Spectrum. What is visible light? What is visible light? Which of the following would you consider dangerous? Which of the following would you consider dangerous? X-rays Radio waves Gamma rays UV radiation Visible light Microwaves Infrared radiation Chapter 5 Periodicity and Atomic Structure 2 The Electromagnetic

More information

2) The energy of a photon of light is proportional to its frequency and proportional to its wavelength.

2) The energy of a photon of light is proportional to its frequency and proportional to its wavelength. Advanced Chemistry Chapter 13 Review Name Per Show all work Wave Properties 1) Which one of the following is correct? A) ν + λ = c B) ν λ = c C) ν = cλ D) λ = c ν E) νλ = c 2) The energy of a photon of

More information

Chapter 6: Electronic Structure of Atoms

Chapter 6: Electronic Structure of Atoms Chapter 6: Electronic Structure of Atoms Learning Outcomes: Calculate the wavelength of electromagnetic radiation given its frequency or its frequency given its wavelength. Order the common kinds of radiation

More information

Atomic Structure and the Periodic Table

Atomic Structure and the Periodic Table Atomic Structure and the Periodic Table The electronic structure of an atom determines its characteristics Studying atoms by analyzing light emissions/absorptions Spectroscopy: analysis of light emitted

More information

Development of the Periodic Table. Chapter 5. Light and the EM Spectrum. Light

Development of the Periodic Table. Chapter 5. Light and the EM Spectrum. Light Chapter 5 Periodic Table Song Periodicity and Atomic Structure Development of the Periodic Table Mid-1800 s, several scientists placed known elements in order based on different criteria. Mendeleev s and

More information

Electronic Structure of Atoms. Chapter 6

Electronic Structure of Atoms. Chapter 6 Electronic Structure of Atoms Chapter 6 Electronic Structure of Atoms 1. The Wave Nature of Light All waves have: a) characteristic wavelength, λ b) amplitude, A Electronic Structure of Atoms 1. The Wave

More information

Electronic structure the number of electrons in an atom as well as the distribution of electrons around the nucleus and their energies

Electronic structure the number of electrons in an atom as well as the distribution of electrons around the nucleus and their energies Chemistry: The Central Science Chapter 6: Electronic Structure of Atoms Electronic structure the number of electrons in an atom as well as the distribution of electrons around the nucleus and their energies

More information

Chapter 6 - Electronic Structure of Atoms

Chapter 6 - Electronic Structure of Atoms Chapter 6 - Electronic Structure of Atoms 6.1 The Wave Nature of Light To understand the electronic structure of atoms, one must understand the nature of electromagnetic radiation Visible light is an example

More information

Electronic structure of atoms

Electronic structure of atoms Chapter 1 Electronic structure of atoms light photons spectra Heisenberg s uncertainty principle atomic orbitals electron configurations the periodic table 1.1 The wave nature of light Much of our understanding

More information

The Atom & Unanswered Questions:

The Atom & Unanswered Questions: The Atom & Unanswered Questions: 1) Recall-Rutherford s model, that atom s mass is concentrated in the nucleus & electrons move around it. a) Doesn t explain how the electrons were arranged around the

More information

Electrons! Chapter 5

Electrons! Chapter 5 Electrons! Chapter 5 I.Light & Quantized Energy A.Background 1. Rutherford s nuclear model: nucleus surrounded by fast-moving electrons; no info on how electrons move, how they re arranged, or differences

More information

Chapter 7: The Quantum-Mechanical Model of the Atom

Chapter 7: The Quantum-Mechanical Model of the Atom C h e m i s t r y 1 A : C h a p t e r 7 P a g e 1 Chapter 7: The Quantum-Mechanical Model of the Atom Homework: Read Chapter 7. Work out sample/practice exercises Check for the MasteringChemistry.com assignment

More information

Electromagnetic Radiation. is a form of energy that exhibits wavelike behavior as it travels through space.

Electromagnetic Radiation. is a form of energy that exhibits wavelike behavior as it travels through space. Electromagnetic Radiation is a form of energy that exhibits wavelike behavior as it travels through space. What are the 7 forms of electromagnetic radiation, in order of INCREASING wavelength? gamma rays

More information

Quantum Theory of the Atom

Quantum Theory of the Atom The Wave Nature of Light Quantum Theory of the Atom Electromagnetic radiation carries energy = radiant energy some forms are visible light, x rays, and radio waves Wavelength ( λ) is the distance between

More information

Preview. Atomic Physics Section 1. Section 1 Quantization of Energy. Section 2 Models of the Atom. Section 3 Quantum Mechanics

Preview. Atomic Physics Section 1. Section 1 Quantization of Energy. Section 2 Models of the Atom. Section 3 Quantum Mechanics Atomic Physics Section 1 Preview Section 1 Quantization of Energy Section 2 Models of the Atom Section 3 Quantum Mechanics Atomic Physics Section 1 TEKS The student is expected to: 8A describe the photoelectric

More information

Ch 7 Quantum Theory of the Atom (light and atomic structure)

Ch 7 Quantum Theory of the Atom (light and atomic structure) Ch 7 Quantum Theory of the Atom (light and atomic structure) Electromagnetic Radiation - Electromagnetic radiation consists of oscillations in electric and magnetic fields. The oscillations can be described

More information

Electrons, Energy, & the Electromagnetic Spectrum Notes Simplified, 2-D Bohr Model: Figure 2. Figure 3 UNIT 4 - ELECTRONS & ELECTRON ARRANGEMENT

Electrons, Energy, & the Electromagnetic Spectrum Notes Simplified, 2-D Bohr Model: Figure 2. Figure 3 UNIT 4 - ELECTRONS & ELECTRON ARRANGEMENT Electrons, Energy, & the Electromagnetic Spectrum Notes Simplified, 2-D Bohr Model: Figure 1 UNIT 4 - ELECTRONS & ELECTRON ARRANGEMENT Figure 2 Figure 3 The energy is released as electromagnetic radiation.

More information

Electrons in Atoms. Section 5.1 Light and Quantized Energy

Electrons in Atoms. Section 5.1 Light and Quantized Energy Name Date Class 5 Electrons in Atoms Section 5.1 Light and Quantized Energy In your textbook, read about the wave nature of light. Use each of the terms below just once to complete the passage. amplitude

More information

The Photoelectric Effect

The Photoelectric Effect The Photoelectric Effect Light can strike the surface of some metals causing an electron to be ejected No matter how brightly the light shines, electrons are ejected only if the light has sufficient energy

More information

Properties of Light. Arrangement of Electrons in Atoms. The Development of a New Atomic Model. Electromagnetic Radiation CHAPTER 4

Properties of Light. Arrangement of Electrons in Atoms. The Development of a New Atomic Model. Electromagnetic Radiation CHAPTER 4 CHAPTER 4 Arrangement of Electrons in Atoms The Development of a New Atomic Model The Rutherford model was a great improvement over the Thomson model of the atom. But, there was one major question that

More information

Calendar. October 23, Chapter 5 Notes Waves.notebook Waves vocab waves ws. quiz PSAT. Blank. elements test. demo day

Calendar. October 23, Chapter 5 Notes Waves.notebook Waves vocab waves ws. quiz PSAT. Blank. elements test. demo day Calendar Sunday Monday Tuesday Wednesday Thursday Friday Saturday 13 14 Waves vocab waves ws 20 PSAT make notecards 7th 15 21 22 quiz 16 23 17 24 27 28 29 30 31 elements test demo day Blank 1 The Nature

More information

Chapter 5 Electrons In Atoms

Chapter 5 Electrons In Atoms Chapter 5 Electrons In Atoms 5.1 Revising the Atomic Model 5.2 Electron Arrangement in Atoms 5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 Copyright Pearson Education, Inc., or its affiliates.

More information

Chapter 6 Electronic structure of atoms

Chapter 6 Electronic structure of atoms Chapter 6 Electronic structure of atoms light photons spectra Heisenberg s uncertainty principle atomic orbitals electron configurations the periodic table 6.1 The wave nature of light Visible light is

More information

Physical Electronics. First class (1)

Physical Electronics. First class (1) Physical Electronics First class (1) Bohr s Model Why don t the electrons fall into the nucleus? Move like planets around the sun. In circular orbits at different levels. Amounts of energy separate one

More information

The Structure of the Atom Review

The Structure of the Atom Review The Structure of the Atom Review Atoms are composed of PROTONS + positively charged mass = 1.6726 x 10 27 kg NEUTRONS neutral mass = 1.6750 x 10 27 kg ELECTRONS negatively charged mass = 9.1096 x 10 31

More information

5.1 Light & Quantized Energy

5.1 Light & Quantized Energy 5.1 Light & Quantized Energy Objectives: 1. Describe electromagnetic (EM) wave properties & measures 2. Relate visible light to areas of the EM spectrum with higher & lower energy 3. Know the relationship

More information

Chapter 4. Table of Contents. Section 1 The Development of a New Atomic Model. Section 2 The Quantum Model of the Atom

Chapter 4. Table of Contents. Section 1 The Development of a New Atomic Model. Section 2 The Quantum Model of the Atom Arrangement of Electrons in Atoms Table of Contents Section 1 The Development of a New Atomic Model Section 2 The Quantum Model of the Atom Section 3 Electron Configurations Section 1 The Development of

More information

Electron Arrangement - Part 1

Electron Arrangement - Part 1 Brad Collins Electron Arrangement - Part 1 Chapter 8 Some images Copyright The McGraw-Hill Companies, Inc. Properties of Waves Wavelength (λ) is the distance between identical points on successive waves.

More information

Explain the mathematical relationship among the speed, wavelength, and frequency of electromagnetic radiation.

Explain the mathematical relationship among the speed, wavelength, and frequency of electromagnetic radiation. Preview Objectives Properties of Light Wavelength and Frequency The Photoelectric Effect The Hydrogen-Atom Line-Emission Spectrum Bohr Model of the Hydrogen Atom Photon Emission and Absorption Section

More information

CHEMISTRY Matter and Change

CHEMISTRY Matter and Change CHEMISTRY Matter and Change Chapter 5: Electrons in Atoms 5 Section 5.1 Section Section 5.3 Table Of Contents Light and Quantized Energy Electron Configuration Compare the wave and particle natures of

More information

Chapter 4 Electron Configurations

Chapter 4 Electron Configurations Chapter 4 Electron Configurations Waves Today scientists recognize light has properties of waves and particles Waves: light is electromagnetic radiation and travels in electromagnetic waves. 4 Characteristics

More information

Chapter 7. The Quantum- Mechanical Model of the Atom. Chapter 7 Lecture Lecture Presentation. Sherril Soman Grand Valley State University

Chapter 7. The Quantum- Mechanical Model of the Atom. Chapter 7 Lecture Lecture Presentation. Sherril Soman Grand Valley State University Chapter 7 Lecture Lecture Presentation Chapter 7 The Quantum- Mechanical Model of the Atom Sherril Soman Grand Valley State University The Beginnings of Quantum Mechanics Until the beginning of the twentieth

More information

Quantum Theory of the Atom

Quantum Theory of the Atom Quantum Theory of the Atom The Wave Nature of Light A wave is a continuously repeating change or oscillation in matter or in a physical field. Light is also a wave. It consists of oscillations in electric

More information

NOTES: 5.3 Light and Atomic Spectra (more Quantum Mechanics!)

NOTES: 5.3 Light and Atomic Spectra (more Quantum Mechanics!) NOTES: 5.3 Light and Atomic Spectra (more Quantum Mechanics!) Light WAVE or PARTICLE? Electromagnetic Radiation Electromagnetic radiation includes: -radio waves -microwaves -infrared waves -visible light

More information

Atomic Structure. Standing Waves x10 8 m/s. (or Hz or 1/s) λ Node

Atomic Structure. Standing Waves x10 8 m/s. (or Hz or 1/s) λ Node Atomic Structure Topics: 7.1 Electromagnetic Radiation 7.2 Planck, Einstein, Energy, and Photons 7.3 Atomic Line Spectra and Niels Bohr 7.4 The Wave Properties of the Electron 7.5 Quantum Mechanical View

More information

Electrons, Energy, & the Electromagnetic Spectrum Notes

Electrons, Energy, & the Electromagnetic Spectrum Notes Electrons, Energy, & the Electromagnetic Spectrum Notes Bohr Model Diagram Interpretation What form of EM radiation is released when an electron in a hydrogen atom falls from the 5 th energy level to the

More information

SCH4U: History of the Quantum Theory

SCH4U: History of the Quantum Theory SCH4U: History of the Quantum Theory Black Body Radiation When an object is heated, it initially glows red hot and at higher temperatures becomes white hot. This white light must consist of all of the

More information

Electronic Structure and the Periodic Table. Unit 6 Honors Chemistry

Electronic Structure and the Periodic Table. Unit 6 Honors Chemistry Electronic Structure and the Periodic Table Unit 6 Honors Chemistry Wave Theory of Light James Clerk Maxwell Electromagnetic waves a form of energy that exhibits wavelike behavior as it travels through

More information

AP Chemistry. Chapter 6 Electronic Structure of Atoms

AP Chemistry. Chapter 6 Electronic Structure of Atoms AP Chemistry Chapter 6 Electronic Structure of Atoms Section 6.1 Wave Nature of Light When we say "light," we generally are referring to visible light a type of electromagnetic radiation But actually Visible

More information

WAVE NATURE OF LIGHT

WAVE NATURE OF LIGHT WAVE NATURE OF LIGHT Light is electromagnetic radiation, a type of energy composed of oscillating electric and magnetic fields. The fields oscillate perpendicular to each other. In vacuum, these waves

More information

LIGHT AND THE QUANTUM MODEL

LIGHT AND THE QUANTUM MODEL LIGHT AND THE QUANTUM MODEL WAVES Wavelength ( ) - length of one complete wave Frequency ( ) - # of waves that pass a point during a certain time period hertz (Hz) = 1/s Amplitude (A) - distance from the

More information

Atomic Structure and Periodicity

Atomic Structure and Periodicity p. 99 p. 98 p. 98 Electromagnetic Spectrum Image Atomic Structure and Periodicity Chemistry Zumdahl Chapter 7 Properties of Light Electromagnetic Radiation: a form of energy that exhibits wavelike behavior

More information

Lecture 6 - Atomic Structure. Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 6. Lecture 6 - Introduction

Lecture 6 - Atomic Structure. Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 6. Lecture 6 - Introduction Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 6 Light and other forms of electromagnetic radiation Light interacting with matter The properties of light and matter Lecture

More information

Outline Chapter 9 The Atom Photons Photons The Photoelectron Effect Photons Photons

Outline Chapter 9 The Atom Photons Photons The Photoelectron Effect Photons Photons Outline Chapter 9 The Atom 9-1. Photoelectric Effect 9-3. What Is Light? 9-4. X-rays 9-5. De Broglie Waves 9-6. Waves of What? 9-7. Uncertainty Principle 9-8. Atomic Spectra 9-9. The Bohr Model 9-10. Electron

More information

Energy levels and atomic structures lectures chapter one

Energy levels and atomic structures lectures chapter one Structure of Atom An atom is the smallest constituent unit of ordinary matter that has the properties of a element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are

More information

Chapter 7 QUANTUM THEORY & ATOMIC STRUCTURE Brooks/Cole - Thomson

Chapter 7 QUANTUM THEORY & ATOMIC STRUCTURE Brooks/Cole - Thomson Chapter 7 QUANTUM THEORY & ATOMIC STRUCTURE 1 7.1 The Nature of Light 2 Most subatomic particles behave as PARTICLES and obey the physics of waves. Light is a type of electromagnetic radiation Light consists

More information

Quantum Theory & Electronic Structure of Atoms. It s Unreal!! Check your intuition at the door.

Quantum Theory & Electronic Structure of Atoms. It s Unreal!! Check your intuition at the door. Quantum Theory & Electronic Structure of Atoms It s Unreal!! Check your intuition at the door. 1 Quantum Theory of the Atom Description of the atom and subatomic particles. We will focus on the electronic

More information

10/27/2017 [pgs ]

10/27/2017 [pgs ] Objectives SWBAT explain the relationship between energy and frequency. SWBAT predict the behavior of and/or calculate quantum and photon energy from frequency. SWBAT explain how the quantization of energy

More information

Lecture 11 Atomic Structure

Lecture 11 Atomic Structure Lecture 11 Atomic Structure Earlier in the semester, you read about the discoveries that lead to the proposal of the nuclear atom, an atom of atomic number Z, composed of a positively charged nucleus surrounded

More information

Chapter 7. The Quantum Mechanical Model of the Atom

Chapter 7. The Quantum Mechanical Model of the Atom Chapter 7 The Quantum Mechanical Model of the Atom Quantum Mechanics The Behavior of the Very Small Electrons are incredibly small. Electron behavior determines much of the behavior of atoms. Directly

More information

General Chemistry by Ebbing and Gammon, 8th Edition

General Chemistry by Ebbing and Gammon, 8th Edition Chem 1045 General Chemistry by Ebbing and Gammon, 8th Edition George W.J. Kenney, Jr Last Update: 26-Mar-2009 Chapter 7: Quantum Theory of the Atom These Notes are to SUPPLIMENT the Text, They do NOT Replace

More information

Provide a short and specific definition in YOUR OWN WORDS. Do not use the definition from the book. Electromagnetic Radiation

Provide a short and specific definition in YOUR OWN WORDS. Do not use the definition from the book. Electromagnetic Radiation Name: Provide a short and specific definition in YOUR OWN WORDS. Do not use the definition from the book Additional Notes: Electromagnetic Radiation Electromagnetic Spectrum Wavelength Frequency Photoelectric

More information

Electrons hold the key to understanding why substances behave as they do. When atoms react it is their outer pars, their electrons, that interact.

Electrons hold the key to understanding why substances behave as they do. When atoms react it is their outer pars, their electrons, that interact. Electronic Structure of Atoms The Wave Nature of Light Electrons hold the key to understanding why substances behave as they do. When atoms react it is their outer pars, their electrons, that interact.

More information

Chapter 6 Electronic Structure of Atoms

Chapter 6 Electronic Structure of Atoms Chapter 6 Electronic Structure of Atoms What is the origin of color in matter? Demo: flame tests What does this have to do with the atom? Why are atomic properties periodic? 6.1 The Wave Nature of Light

More information

Chapter 7 Problems: 16, 17, 19 23, 26, 27, 30, 31, 34, 38 41, 45, 49, 53, 60, 61, 65, 67, 75, 79, 80, 83, 87, 90, 91, 94, 95, 97, 101, 111, 113, 115

Chapter 7 Problems: 16, 17, 19 23, 26, 27, 30, 31, 34, 38 41, 45, 49, 53, 60, 61, 65, 67, 75, 79, 80, 83, 87, 90, 91, 94, 95, 97, 101, 111, 113, 115 Chapter 7 Problems: 16, 17, 19 23, 26, 27, 30, 31, 34, 38 41, 45, 49, 53, 60, 61, 65, 67, 75, 79, 80, 83, 87, 90, 91, 94, 95, 97, 101, 111, 113, 115 117, 121, 122, 125a Chapter 7 Atomic Structure and Periodicity

More information

Chapter 9: Electrons and the Periodic Table

Chapter 9: Electrons and the Periodic Table C h e m i s t r y 1 2 C h 9 : E l e c t r o n s a n d P e r i o d i c T a b l e P a g e 1 Chapter 9: Electrons and the Periodic Table Work on MasteringChemistry assignments What we have learned: Dalton

More information

Chapter 27 Lecture Notes

Chapter 27 Lecture Notes Chapter 27 Lecture Notes Physics 2424 - Strauss Formulas: λ P T = 2.80 10-3 m K E = nhf = nhc/λ fλ = c hf = K max + W 0 λ = h/p λ - λ = (h/mc)(1 - cosθ) 1/λ = R(1/n 2 f - 1/n 2 i ) Lyman Series n f = 1,

More information

Chapter 5 Electrons In Atoms

Chapter 5 Electrons In Atoms Chapter 5 Electrons In Atoms 5.1 Revising the Atomic Model 5.2 Electron Arrangement in Atoms 5.3 Atomic Emission Spectra and the Quantum Mechanical Model 1 Copyright Pearson Education, Inc., or its affiliates.

More information

Accounts for certain objects being colored. Used in medicine (examples?) Allows us to learn about structure of the atom

Accounts for certain objects being colored. Used in medicine (examples?) Allows us to learn about structure of the atom 1.1 Interaction of Light and Matter Accounts for certain objects being colored Used in medicine (examples?) 1.2 Wavelike Properties of Light Wavelength, : peak to peak distance Amplitude: height of the

More information

Energy and the Quantum Theory

Energy and the Quantum Theory Energy and the Quantum Theory Light electrons are understood by comparing them to light 1. radiant energy 2. travels through space 3. makes you feel warm Light has properties of waves and particles Amplitude:

More information

Duncan. Electrons, Energy, & the Electromagnetic Spectrum Notes Simplified, 2-D Bohr Model: Figure 1. Figure 2. Figure 3

Duncan. Electrons, Energy, & the Electromagnetic Spectrum Notes Simplified, 2-D Bohr Model: Figure 1. Figure 2. Figure 3 Electrons, Energy, & the Electromagnetic Spectrum Notes Simplified, 2-D Bohr Model: Figure 1 Figure 2 Figure 3 Light Calculation Notes Here s how the type/form of EM radiation can be determined The amount

More information

Chapter Test B. Chapter: Arrangement of Electrons in Atoms. possible angular momentum quantum numbers? energy level? a. 4 b. 8 c. 16 d.

Chapter Test B. Chapter: Arrangement of Electrons in Atoms. possible angular momentum quantum numbers? energy level? a. 4 b. 8 c. 16 d. Assessment Chapter Test B Chapter: Arrangement of Electrons in Atoms PART I In the space provided, write the letter of the term or phrase that best completes each statement or best answers each question

More information

Chapter 4 Arrangement of Electrons in Atoms. 4.1 The Development of a New Atomic Model

Chapter 4 Arrangement of Electrons in Atoms. 4.1 The Development of a New Atomic Model Chapter 4 Arrangement of Electrons in Atoms 4.1 The Development of a New Atomic Model Properties of Light Electromagnetic Radiation: EM radiation are forms of energy which move through space as waves There

More information

Atomic Structure 11/21/2011

Atomic Structure 11/21/2011 Atomic Structure Topics: 7.1 Electromagnetic Radiation 7.2 Planck, Einstein, Energy, and Photons 7.3 Atomic Line Spectra and Niels Bohr 7.4 The Wave Properties of the Electron 7.5 Quantum Mechanical View

More information

Chapter 6. Electronic Structure of Atoms. Lecture Presentation. John D. Bookstaver St. Charles Community College Cottleville, MO

Chapter 6. Electronic Structure of Atoms. Lecture Presentation. John D. Bookstaver St. Charles Community College Cottleville, MO Lecture Presentation Chapter 6 John D. Bookstaver St. Charles Community College Cottleville, MO Waves To understand the electronic structure of atoms, one must understand the nature of electromagnetic

More information

Table of Contents Electrons in Atoms > Light and Quantized Energy > Quantum Theory and the Atom > Electron Configuration

Table of Contents Electrons in Atoms > Light and Quantized Energy > Quantum Theory and the Atom > Electron Configuration Electrons in Atoms October 20, 2014 Table of Contents Electrons in Atoms > Light and Quantized Energy > Quantum Theory and the Atom > Electron Configuration 1 Electromagnetic Spectrum Electromagnetic radiation

More information

Problems with the atomic model?

Problems with the atomic model? Modern Atomic Theory- Electronic Structure of Atoms DR HNIMIR-CH7 Where should (-) electrons be found? Problems with the atomic model? First, a Little About Electromagnetic Radiation- Waves Another Look

More information

Electromagnetic Radiation All electromagnetic radiation travels at the same velocity: the speed of light (c), m/s.

Electromagnetic Radiation All electromagnetic radiation travels at the same velocity: the speed of light (c), m/s. Chapter 6 Electronic Structure of Atoms Waves To understand the electronic structure of atoms, one must understand the nature of electromagnetic radiation. The distance between corresponding points on

More information

The Bohr Model of the Atom

The Bohr Model of the Atom Unit 4: The Bohr Model of the Atom Properties of light Before the 1900 s, light was thought to behave only as a wave. Light is a type of electromagnetic radiation - a form of energy that exhibits wave

More information

Chapter 6. Quantum Theory and the Electronic Structure of Atoms Part 1

Chapter 6. Quantum Theory and the Electronic Structure of Atoms Part 1 Chapter 6 Quantum Theory and the Electronic Structure of Atoms Part 1 The nature of light Quantum theory Topics Bohr s theory of the hydrogen atom Wave properties of matter Quantum mechanics Quantum numbers

More information

Mystery #3 Emission Spectra of Elements. Tube filled with elemental gas. Voltage can be applied across both ends, this causes the gas to emit light

Mystery #3 Emission Spectra of Elements. Tube filled with elemental gas. Voltage can be applied across both ends, this causes the gas to emit light Mystery #3 Emission Spectra of Elements Tube filled with elemental gas. Voltage can be applied across both ends, this causes the gas to emit light Line Spectra Copyright The McGraw-Hill Companies, Inc.

More information

CHAPTER 4 10/11/2016. Properties of Light. Anatomy of a Wave. Components of a Wave. Components of a Wave

CHAPTER 4 10/11/2016. Properties of Light. Anatomy of a Wave. Components of a Wave. Components of a Wave Properties of Light CHAPTER 4 Light is a form of Electromagnetic Radiation Electromagnetic Radiation (EMR) Form of energy that exhibits wavelike behavior and travels at the speed of light. Together, all

More information

Name Class Date. Chapter: Arrangement of Electrons in Atoms

Name Class Date. Chapter: Arrangement of Electrons in Atoms Assessment Chapter Test A Chapter: Arrangement of Electrons in Atoms In the space provided, write the letter of the term that best completes each sentence or best answers each question. 1. Which of the

More information

Bohr. Electronic Structure. Spectroscope. Spectroscope

Bohr. Electronic Structure. Spectroscope. Spectroscope Bohr Electronic Structure Bohr proposed that the atom has only certain allowable energy states. Spectroscope Using a device called a it was found that gaseous elements emitted electromagnetic radiation

More information

AP Chapter 6 Study Questions

AP Chapter 6 Study Questions Class: Date: AP Chapter 6 Study Questions True/False Indicate whether the statement is true or false. 1. The wavelength of radio waves can be longer than a football field. 2. Black body radiation is the

More information

Modern Atomic Theory

Modern Atomic Theory Modern Atomic Theory In science, often times chemical or physical behavior can not be seen with the naked eye (nor with the use of some other device). Consequently, an understanding and explanation of

More information

--THE QUANTUM MECHANICAL MODEL

--THE QUANTUM MECHANICAL MODEL --THE QUANTUM MECHANICAL MODEL Bohr s Energy Levels Electrons reside in certain energy levels Each level represents a certain amount of energy Low Energy levels: closer to nucleus High Energy levels: farther

More information

Chapter 4. Development of a New Model

Chapter 4. Development of a New Model Chapter 4 Development of a New Model Electrons behave like particles in some experiments, and like waves in others. The electron's 'wave/particle duality' has no real analogy in the everyday world. The

More information

Chapter 6. Electronic Structure of Atoms. Lecture Presentation. John D. Bookstaver St. Charles Community College Cottleville, MO

Chapter 6. Electronic Structure of Atoms. Lecture Presentation. John D. Bookstaver St. Charles Community College Cottleville, MO Lecture Presentation Chapter 6 Electronic Structure of Atoms John D. Bookstaver St. Charles Community College Cottleville, MO Waves Waves are periodic disturbances they repeat at regular intervals of time

More information

Physics and the Quantum Mechanical Model

Physics and the Quantum Mechanical Model chemistry 1 of 38 Mechanical Model Neon advertising signs are formed from glass tubes bent in various shapes. An electric current passing through the gas in each glass tube makes the gas glow with its

More information

Chapter 8: Electrons in Atoms Electromagnetic Radiation

Chapter 8: Electrons in Atoms Electromagnetic Radiation Chapter 8: Electrons in Atoms Electromagnetic Radiation Electromagnetic (EM) radiation is a form of energy transmission modeled as waves moving through space. (see below left) Electromagnetic Radiation

More information

Chapter 5 Models of the Atom

Chapter 5 Models of the Atom Chapter 5 Models of the Atom Atomic Models Rutherford used existing ideas about the atom and proposed an atomic model in which the electrons move around the nucleus. However, Rutherford s atomic model

More information

THE NATURE OF THE ATOM. alpha particle source

THE NATURE OF THE ATOM. alpha particle source chapter THE NATURE OF THE ATOM www.tutor-homework.com (for tutoring, homework help, or help with online classes) Section 30.1 Rutherford Scattering and the Nuclear Atom 1. Which model of atomic structure

More information

CHEMISTRY. Chapter 6 Electronic Structure of Atoms

CHEMISTRY. Chapter 6 Electronic Structure of Atoms CHEMISTRY The Central Science 8 th Edition Chapter 6 Electronic Structure of Atoms Kozet YAPSAKLI Who are these men? Ancient Philosophy Who: Aristotle, Democritus When: More than 2000 years ago Where:

More information

2) The number of cycles that pass through a stationary point is called A) wavelength. B) amplitude. C) frequency. D) area. E) median.

2) The number of cycles that pass through a stationary point is called A) wavelength. B) amplitude. C) frequency. D) area. E) median. Chemistry Structure and Properties 2nd Edition Tro Test Bank Full Download: http://testbanklive.com/download/chemistry-structure-and-properties-2nd-edition-tro-test-bank/ Chemistry: Structure & Properties,

More information