Quantum Mechanical Model
|
|
|
- Sheena Taylor
- 5 years ago
- Views:
Transcription
1 Quantum Mechanical Model
2 De Broglie De Broglie build upon Planck s observations of packets of light (photons) emit a distinctive quantum of energy. He proposed that the particles being emitted have particle and wavelike properties.
3 Heisenburg He stated that it is impossible to know the exact position and the exact momentum of an object at the same time. He was referring to this at the nanoscopic level (10-9 and smaller)
4 Heisenburg s statement is known as the Heisenberg uncertainty principle. Schrӧdinger treated electrons as a wave and developed a formula to describe the wavelike properties of an electron.
5 From these contributions, the concept of electron density instead of fixed orbits began to emerge. You cannot find an electron in one location, but you can determine a general region in which it is more likely to be found (probability).
6 Electron Cloud The electron cloud model was developed to move from fixed orbits (Bohr model), the density-probability clouds (Quantum model). With the density-probability clouds, shapes and associated energies for these shapes began to emerge.
7 ORBITAL SHAPES IN THE ELECTRON CLOUD
8 Notice We will still have electron levels, and the shapes will repeat in a specific pattern over time. These patterns are governed by the quantum numbers. There are four quantum numbers.
9 Quantum Numbers Principal number (n): is the energy level The values are 1, 2, 3, 4, 5, 6, and 7. To find the highest principal number for a given element, look at the periodic table and use the row number. All the other principal numbers lower then the highest number also exist in the atom.
10 Principal Number(n) What is the highest n for: He C Fe
11 Energy sublevel number (l) The energy sublevel number corresponds to the shape of the electron density. The formula for determine the energy sublevel numbers available for each energy level (principal number) which exists in the atom is: 0 to n-1
12 Energy sublevel number (l) For example: if the principal number is 1 0 to n-1 0 to to 0 Only one principal number for energy level 1, and it is zero.
13 Energy sublevel number (l) The energy sublevel numbers are related specific letters and have specific shapes. 0 = s 1 = p 2 = d 3 = f
14 Orbital Shapes (for the energy sublevel number) An s orbital is spherical. It has a node inside it.
15 Orbital Shapes (for the energy sublevel number) A p orbital, there are three different types.
16 Orbital Shapes (for the energy sublevel number) A d orbital, there are five of them.
17 Orbital Shapes (for the energy sublevel number) An f orbital, there are seven different versions.
18 Patterns You may have noticed that there is a patterns, 1 s-orbital, 3 p-orbitals, 5 d-orbitals, and 7 f- orbitals. This pattern is dictated in the 3 rd quantum number known as the orbital quantum number (m).
19 Orbital quantum number (m) The orbital quantum number is used to derive how many of each type of electron density orbital shapes are possible. The formula for this is to take the energy sublevel (l) from its negative value to its positive value by integers.
20 Orbital quantum number (m) So if the orbital numbers are 0, 1 and 2 The first orbital number will range for 0 to 0 (or it is just one). So it predicts one s orbital on that energy level. For 1, then we have -1, 0, and 1. Which means we can have three p orbitals.
21 Orbital quantum number (m) For 2, then the range is -2, -1, 0, 1, 2 So we have five different orbitals for the d-shape electron density cloud.
22 Spin Quantum Number This one is easy, it is either +1/2 or -1/2 The spin means that the electron is spinning in either a clockwise or a counter clockwise direction.
23 Pauli Exclusion Principle This principle states, that no two electrons in an atom will have the exact same set of four quantum numbers.
24 Decoding (1, 0, 0, -1/2) Principal level 1, it is an s-orbital, with only one orientation, and this is the -1/2 electron.
25 Decoding (2, 1, -1, +1/2) Principal Level 2 It is a p orbital It has the negative orientation It has the positive spin
26 Practice Writing Out Combinations Helium Principal numbers available: just 1 So for the energy sublevel it is 0 to n-1 So 0 to 0 which becomes 0 (1, 0, X, X) Next the 0 ranges from l to + l So 0 (1, 0, 0, X) Last is spin, an +1/2 and a -1/2) (1, 0, 0, +1/2) and (1, 0, 0, and -1/2)
27 Practice Writing Out Combinations Carbon
Arrangement of Electrons in Atoms
CHAPTER 4 REVIEW Arrangement of Electrons in Atoms SECTION 1 SHORT ANSWER Answer the following questions in the space provided. 1. In what way does the photoelectric effect support the particle theory
CHAPTER 4 Arrangement of Electrons in Atoms
CHAPTER 4 Arrangement of Electrons in Atoms SECTION 1 The Development of a New Atomic Model OBJECTIVES 1. Explain the mathematical relationship among the speed, wavelength, and frequency of electromagnetic
Chapter 4 Section 2 Notes
Chapter 4 Section 2 Notes Vocabulary Heisenberg Uncertainty Principle- states that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle. Quantum
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
Chem I - Wed, 9/16/15
Chem I - Wed, 9/16/15 Do Now Complete the back of worksheet 4.5 Homework Pennium Lab if not Finished E- Config POGIL Agenda Return Papers Wks 4.5 Pennium Lab Electron Config Chapter 5 Quantum Theory and
Quantum Mechanical Model of the Atom. Honors Chemistry Chapter 13
Quantum Mechanical Model of the Atom Honors Chemistry Chapter 13 Let s Review Dalton s Atomic Theory Thomson s Model Plum Pudding Rutherford s Model Bohr s Model Planetary Quantum Mechanical Model cloud
--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
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
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
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
Name Date Class MODELS OF THE ATOM
Name Date Class 5.1 MODELS OF THE ATOM Section Review Objectives Identify inadequacies in the Rutherford atomic model Identify the new assumption in the Bohr model of the atom Describe the energies and
Chapter 6. of Atoms. Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten
Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 6 John D. Bookstaver St. Charles Community College St. Peters, MO 2006, Prentice Hall,
Chapter 6. of Atoms. Waves. Waves 1/15/2013
Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 6 John D. Bookstaver St. Charles Community College St. Peters, MO 2006, Prentice Hall,
Bohr s Correspondence Principle
Bohr s Correspondence Principle In limit that n, quantum mechanics must agree with classical physics E photon = 13.6 ev 1 n f n 1 i = hf photon In this limit, n i n f, and then f photon electron s frequency
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
Introduction to Quantum Mechanics. and Quantum Numbers
Introduction to Quantum Mechanics and Quantum Numbers The Quantum Mechanical Model quantum mechanics: the application of quantum theory to explain the properties of matter, particularly electrons in atoms
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:
Topic 12: Quantum numbers. Heisenberg, Schrodinger, Quantum Theory, Quantum numbers, Practice
Topic 12: Quantum numbers Heisenberg, Schrodinger, Quantum Theory, Quantum numbers, Practice Quantum Mechanics We left off by saying Bohr s model only explained the electron arrangement of Hydrogen...
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
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
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
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
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
The Bohr Model Bohr proposed that an electron is found only in specific circular paths, or orbits, around the nucleus.
5.1 The Development of Atomic Models Rutherford s atomic model could not explain the chemical properties of elements. Rutherford s atomic model could not explain why objects change color when heated. The
Chapter 11. What subatomic particles do you get to play with? Protons Neutrons Eletrons
Chapter 11 What subatomic particles do you get to play with? Protons Neutrons Eletrons changes the element isotopes: only mass is different what we play with in chemistry Bohr Model of the Atom electrons
Quantum Theory and Electron Configurations
Chapter 5 Chapter 5 Quantum Theory and Electron Configurations It s all about color In terms of atomic models, so far: Dalton (1803) = Tiny, solid particle Thomson (1897) = Plum Pudding model Electrons
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
Classical Theory of the Atom
QUANTUM CHEMISTRY Classical Theory of the Atom The electron is in a shell around nucleus at a certain distance (radius, r) Electron orbits (revolves) the nucleus, like the planets around the sun. r Hydrogen
Terms to Know. 10.Angular quantum number 11.Magnetic quantum number 12.Spin quantum number
Terms to Know 1. Photon 2. Atomic emission spectrum 3. Ground state 4. Atomic orbital 5. Aufbau principle 6. Pauli exclusion principle 7. Hunds rule 8. Electron configuration 9. Principle quantum number
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
SECTION 2: QUANTUM THEORY AND THE ATOM CHAPTER 9: ELECTRONS IN ATOMS AND THE PERIODIC TABLE
SECTION 2: QUANTUM THEORY AND THE ATOM CHAPTER 9: ELECTRONS IN ATOMS AND THE PERIODIC TABLE Learning Goals Compare the Bohr and quantum mechanical models of the atom. Explain the impact of de Broglie s
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
H!!!! = E! Lecture 7 - Atomic Structure. Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 7. Lecture 7 - Introduction
Chem 103, Section F0F Unit II - Quantum Theory and Atomic Structure Lecture 7 Lecture 7 - Atomic Structure Reading in Silberberg - Chapter 7, Section 4 The Qunatum-Mechanical Model of the Atom The Quantum
UNIT 1: STRUCTURE AND PROPERTIES QUANTUM MECHANICS. Development of the Modern Atomic Theory
UNIT 1: STRUCTURE AND PROPERTIES QUANTUM MECHANICS Development of the Modern Atomic Theory Problems with the Bohr Model Bohr s theory only fit the observed spectra of hydrogen. In addition, the Bohr model
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
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
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
The early periodic table based on atomic weight. (Section 5.1) Lets review: What is a hydrogen atom? 1 electron * nucleus H 1 proton
PERIODICITY AND ATOMIC STRUCTURE CHAPTER 5 How can we relate the structure of the atom to the way that it behaves chemically? The process of understanding began with a realization that many of the properties
Arrangement of Electrons in Atoms
CHAPTER 4 REVIEW Arrangement of Electrons in Atoms Teacher Notes and Answers Chapter 4 SECTION 1 SHORT ANSWER 1. In order for an electron to be ejected from a metal surface, the electron must be struck
Name Class Date ELECTRONS AND THE STRUCTURE OF ATOMS
Electrons in Atoms ELECTRONS AND THE STRUCTURE OF ATOMS 5.1 Revising the Atomic Model Essential Understanding of an atom. An electron s energy depends on its location around the nucleus Reading Strategy
A more comprehensive theory was needed. 1925, Schrödinger and Heisenberg separately worked out a new theory Quantum Mechanics.
Ch28 Quantum Mechanics of Atoms Bohr s model was very successful to explain line spectra and the ionization energy for hydrogen. However, it also had many limitations: It was not able to predict the line
COLLEGE PHYSICS. Chapter 30 ATOMIC PHYSICS
COLLEGE PHYSICS Chapter 30 ATOMIC PHYSICS Matter Waves: The de Broglie Hypothesis The momentum of a photon is given by: The de Broglie hypothesis is that particles also have wavelengths, given by: Matter
Quantum Mechanics of Atoms
Quantum Mechanics of Atoms Your theory is crazy, but it's not crazy enough to be true N. Bohr to W. Pauli Quantum Mechanics of Atoms 2 Limitations of the Bohr Model The model was a great break-through,
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
Line spectrum (contd.) Bohr s Planetary Atom
Line spectrum (contd.) Hydrogen shows lines in the visible region of the spectrum (red, blue-green, blue and violet). The wavelengths of these lines can be calculated by an equation proposed by J. J. Balmer:
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
4.2 WHERE are the electrons in the { atom???? QUANTUM NUMBERS
4.2 WHERE are the electrons in the { atom???? QUANTUM NUMBERS Bohr s Model Contradicts Common Sense If only certain orbits with definite energies are allowed and the electrons constantly gives off radiation,
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
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
Starter # (1) Why was Rutherford s model not good enough and need to be modified by scientists?
1. (1) Why was Rutherford s model not good enough and need to be modified by scientists? It could not explain or predict any chemical behavior of any elements 2. (1) What is one of the only things that
Name Date Class MODELS OF THE ATOM
5.1 MODELS OF THE ATOM Section Review Objectives Identify inadequacies in the Rutherford atomic model Identify the new assumption in the Bohr model of the atom Describe the energies and positions of electrons
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
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
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
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
Atomic Structure Part II Electrons in Atoms
Atomic Structure Part II Electrons in Atoms Radiant energy travels in the form of waves that have both electrical and magnetic properties. These electromagnetic waves can travel through empty space, as
Chapter 7 Atomic Structure and Orbitals
Chapter 7 Atomic Structure and Orbitals Alpha Scattering Experiment: Rutherford s observations Light as Waves or Particles Wavelength (λ) is the distance between any two identical points in consecutive
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
Electronic Structure. of Atoms. 2009, Prentice-Hall, Inc. Electronic Structure. of Atoms. 2009, Prentice-Hall, Inc. Electronic Structure.
Chemistry, The Central Science, 11th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 6 Section 1 6: The Marathon Adapted from: John D. Bookstaver St. Charles Community College
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
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
Ch. 4 Sec. 1-2, Ch. 3 sec.6-8 ENERGY CHANGES AND THE QUANTUM THEORY THE PERIODIC TABLE
Ch. 4 Sec. 1-2, Ch. 3 sec.6-8 ENERGY CHANGES AND THE QUANTUM THEORY THE PERIODIC TABLE What Makes Red Light Red? (4.1) Electromagnetic Radiation: energy that travels in waves (light) Waves Amplitude: height
Honors Chemistry Unit 3 ELECTRONS IN ATOMS
Honors Chemistry Unit 3 ELECTRONS IN ATOMS I. RADIATION A. Particles 1. alpha particle - helium nucleus with 2 protons, 2 neutrons 2. beta particle - electron or positron ejected from nucleus B. Energy
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
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
Atomic Structure Part II. Electrons in Atoms
Atomic Structure Part II Electrons in Atoms Radiant energy travels in the form of waves that have both electrical and magnetic properties. These electromagnetic waves can travel through empty space, as
Chapter 4: The Electron
Chapter 4: The Electron C. Goodman Doral Academy Preparatory High School, 2012-2013 Based on a PowerPoint presentation by Sarah Temple By PresenterMedia.com Section 4-1 Electromagnetic Spectrum Essential
Electron Orbitals. Cartoon courtesy of lab-initio.com
Electron Orbitals Cartoon courtesy of lab-initio.com Quantum Mechanical Model of the Atom The model says that the nucleus is surrounded by a space in which electrons orbit- the electron cloud. The model
Electrons in Atoms. Section 5.1 Light and Quantized Energy Section 5.2 Quantum Theory and the Atom Section 5.3 Electron Configuration
Electrons in Atoms Section 5.1 Light and Quantized Energy Section 5.2 Quantum Theory and the Atom Section 5.3 Electron Configuration Click a hyperlink or folder tab to view the corresponding slides. Exit
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
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
Bohr Model of Atom: electrons move around nucleus in orbits similar to how planets orbit the sun energy levels for electrons are quantized
Chemistry I: Quantum Mechanics Notes Bohr Model of Atom: electrons move around nucleus in orbits similar to how planets orbit the sun energy levels for electrons are quantized Major developments that put
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
Periodicity and the Electronic Structure of Atoms 國防醫學院生化學科王明芳老師
Periodicity and the Electronic Structure of Atoms 國防醫學院生化學科王明芳老師 2018-10-2 1 2 Light and the Electromagnetic Spectrum Electromagnetic energy ( light ) is characterized by wavelength, frequency, and amplitude.
November 06, Chapter 7 Atomic Struture. CHAPTER 7 Atomic Structure. Oct 27 9:34 AM ATOMIC STRUCTURE. Oct 27 9:34 AM
CHAPTER 7 Atomic Structure ATOMIC STRUCTURE 1 The Wave Nature of Light Most subatomic particles behave as PARTICLES and obey the physics of waves. Visible light Ultravioletlight Wavelength Frequency (Hertz
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
AP Chemistry A. Allan Chapter 7 Notes - Atomic Structure and Periodicity
AP Chemistry A. Allan Chapter 7 Notes - Atomic Structure and Periodicity 7.1 Electromagnetic Radiation A. Types of EM Radiation (wavelengths in meters) 10-1 10-10 10-8 4 to 7x10-7 10-4 10-1 10 10 4 gamma
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
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.
Democritus and Leucippus Matter is made up of indivisible particles Dalton - one type of atom for each element. Greek Idea
Electrons in Atoms Democritus and Leucippus Matter is made up of indivisible particles Dalton - one type of atom for each element Greek Idea Thomson s Model Discovered electrons Atoms were made of positive
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
Creating Energy-Level Diagrams Aufbau (building up) Principle Electrons are added to the lowest energy orbital available.
3.6 Atomic Structure and the Periodic Table Bohr's Theory Was Incorrect Because... Only explained the line spectrum of hydrogen Position and motion of an e cannot be specified (since the e is so small,
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
Statistical Mechanics
Statistical Mechanics Uncertainty Principle Demonstration Any experiment designed to observe the electron results in detection of a single electron particle and no interference pattern. Determinacy vs.
Electrons! Chapter 5, Part 2
Electrons! Chapter 5, Part 2 3. Contained within sublevels are orbitals: pairs of electrons each having a different space or region they occupy a. Each sublevel contains certain orbitals: i. s sublevel
Chemistry 111 Dr. Kevin Moore
Chemistry 111 Dr. Kevin Moore Black Body Radiation Heated objects emit radiation based on its temperature Higher temperatures produce higher frequencies PhotoElectric Effect Light on a clean metal surface
Unit 8 Building Atoms with Quantum Leaps
Oh boy... Sam Beckett (from Quantum Leap) Unit 8 Building Atoms with Quantum Leaps Physicists Put Atom in Two Places at Once This was the headline in the science section of the New York Times on May 28,
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.
Announcements. Please check for errors now
Announcements Print worksheet #10 prior to your Thursday discussion section LON-CAPA assignment #6 due Tuesday, Oct. 5 at 9am Next week s quiz will be on Tuesday atomic history and electron configurations
Atomic Structure. Chapter 2
Atomic Structure Chapter 2 Question.. Which of the following contains more electrons than neutrons? H-2 B-11 [O-16] 2- [F-19] 1- The Mass Spectrometer an instrument used to measure masses of different
Physics 102: Lecture 24. Bohr vs. Correct Model of Atom. Physics 102: Lecture 24, Slide 1
Physics 102: Lecture 24 Bohr vs. Correct Model of Atom Physics 102: Lecture 24, Slide 1 Plum Pudding Early Model for Atom positive and negative charges uniformly distributed throughout the atom like plums
Recall the Goal. What IS the structure of an atom? What are the properties of atoms?
Recall the Goal What IS the structure of an atom? What are the properties of atoms? REMEMBER: structure affects function! Important questions: Where are the electrons? What is the energy of an electron?
ATOMIC STRUCRURE
ATOMIC STRUCRURE Long Answer Questions: 1. What are quantum numbers? Give their significance? Ans. The various orbitals in an atom qualitatively distinguished by their size, shape and orientation. The
Chapter 5: Electrons in Atoms
Chapter 5: Electrons in Atoms Models of the Atom Rutherford used existing ideas about the atom and proposed an atomic model in which the electrons move around the nucleus, like the planets move around
Chemistry - Chapter 5 Study Guide
Chemistry Chapter 5 and Special Ionic Nomenclature Checklist I can: List the three properties of a wave Define a wavelength Define a photon Describe Bohr s model Describe the quantum theory of matter Define
Chapter 11 Modern Atomic Theory Notes
Chapter 11 Modern Atomic Theory Notes Electromagnetic radiation energy that travels through space as waves. Waves have three primary characteristics: Wavelength ( lambda) distance between two consecutive
Heat of formation / enthalpy of formation! What is the enthalpy change at standard conditions when 25.0 grams of hydrogen sulfide gas is reacted?
135 Heat of formation / enthalpy of formation! What is the enthalpy change at standard conditions when 25.0 grams of hydrogen sulfide gas is reacted? (Data from Appendix G!) 1) Complete the thermochemical
Heat of formation / enthalpy of formation! What is the enthalpy change at standard conditions when 25.0 grams of hydrogen sulfide gas is reacted?
135 Heat of formation / enthalpy of formation! What is the enthalpy change at standard conditions when 25.0 grams of hydrogen sulfide gas is reacted? (Data from Appendix G!) 1) Find the enthalpy of reaction
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
Chapter 7. Wave Behavior of Electrons
Chapter 7 Wave Behavior of Electrons 2-Slit Interference If electrons behave only like particles, there should only be two bright spots on the target However, electrons actually present an interference