d & f BLOCK ELEMENTS
|
|
|
- Felicia Melissa McCormick
- 5 years ago
- Views:
Transcription
1 d & f BLOCK ELEMENTS Q1. Cu(I) ion is not stable in an aqueous solution. Why? Ans. Cu + (aq) Cu(s) + Cu 2+ (aq) Thus Cu(I) ion undergoes disproportionation in aqueous medium because Cu 2+ is more stable than Cu + due to higher hydration. Q2. Account for the following:- (i) The enthalpies of atomisation of transition elements are high. Ans. This is because transition elements/metals have strong metallic bonds as they have a large number of unpaired electrons in them. (ii) Many of the transition elements and their compounds can act as good catalysts. Ans. The catalytic activity of transition metals is attributed due to the following reasons: (a) Because of their variable oxidation states (b) The transition metal provides a suitable large surface (iii) Among the 3d series of transition elements, the largest number of oxidation states are exhibited by manganese. Ans. This is because manganese has electronic configuration [Ar]3d 5 4s 2, with five unpaired electrons in 3d orbitals. (c) Transition metals and many of their compounds show paramagnetic behaviour. Ans. Because of presence of unpaired electrons in them. (d) Transition metals generally form coloured compounds. Ans. Because of d-d transition of unpaired electrons and absorption of certain wavelengths in the visible region of electromagnetic spectrum. Q. Actinoid metals display a variety of structures. Why? Or, What is the reason of structural variability in actinoids? Ans. The structural variability in actinoids is due to irregularities in metallic radii. Q. Actinoid contraction is greater from element to element than lanthanide contraction. Why? Ans. Due to poorer shielding effect by 5-f electrons then 4-f electrons. Q. Which is the last element in the series of the actinoids? Write the electronic configuration of this element. Comment on the possible oxidation state of this element.
2 Ans. The last element in the series of actinoids is Lawrencium (Lr). Its electronic configuration is [Rn] 86 5f 14 6d 1 7s 2. The possible oxidation state for this element is +3, because +3 oxidation state has stable complete d-orbitals. Q. Name the element of lanthanide series which is well known to exhibit +4 oxidation state. Ans. Cerium (Ce) (atomic number: 58) Q. What is meant by disproportionation of an oxidation state? Give an example. Ans. When a particular oxidation state becomes less stable relative to other oxidation states, one lower, one higher, it is said to undergo disproportionation. For example, manganese (VI) becomes unstable relative to manganese(vii) and manganese (IV) in acidic solution. 3 MnO H + 2 MnO MnO H 2 O It is the chemical reaction in which the same chemical species undergoes oxidation and reduction. Other examples: 2 H 2 O 2 2 H 2 O + O 2 P 4 + NaOH + H 2 O NaH 2 PO 2 + PH 3 Q. Calculate the spin only magnetic moment of M 2+ (aq) ion (Z = 27). Ans. The outer electronic configuration of M (= 27): 3d 7 4s 2. The outer electronic configuration of M 2+ : 3d 7 or Therrefore, the number of unpaired electrons, n = 3 So, the magnetic moment, μ = n (n + 2) B. M. = 15 B. M. = 3.87 B. M. Q. Ans. Much larger ionization enthalpy of Mn (where the required change is d 5 to d 4 ) is mainly responsible for this. Q.Why are Zn,Cd and Hg not regarded as transition elements? Ans.The d-orbitals in these elements are completely fillede in ground state as well as in their common oxidation states. Q.Why do Zr and Hf exhibit similar properties. Ans.Because their atomic radii are similar due to lanthanoid contraction. Q.Why are Zn 2+ salts white but Cu 2+ salts blue?
3 Ans. This is due to fulfilled d-orbitals in Zn 2+ salts and unpaired electron in Cu 2+ salts. It causes d-d transistion in Cu 2+ salts. Q.What is lanthanoid contraction? Ans. The filling of 4-f Orbitals before 5-d orbitals results in a regular decrease in atomic size of element which is called lanthanoid contraction. Q.Compare the chemistry actinoids that of lanthanoids with special reference to (a) Electronic configuration (b)oxidation states Chemical reactivity Ans. Lanthenoids Actinoids (a) Electronic configuration Filling of 4-f orbitals takes place. Filling of 5-f orbitals takes place (b) Oxidation states +2,+3 and +4 Oxidation states are +2 to +7 oxidation states are shown Shown but +3 is common but +3 is common Chemical Reactivity Lanthanoids are less reactive Actinoida are more reactive.
4 Minimum learning content Preparation of Potassiumdichromate Preparation of Potassium permanganate Reactions of potassium permanganate
5 Reactions of Potassium permanganate In alkaline / neutral medium
6
Chemistry STD-XII-Science-Top concepts and Notes on d and f block elements. The d and f-block Elements Top 15 Concepts
The d and f-block Elements Top 15 Concepts 1. d -Block elements: The elements lying in the middle of periodic table belonging to groups 3 to 12 are known as d block elements. Their general electronic configuration
Downloaded from 2. The general electronic configuration of these elements is [Xe] f, d, s.
![Downloaded from 2. The general electronic configuration of these elements is [Xe] f, d, s.](/thumbs/94/119630972.jpg "Downloaded from 2. The general electronic configuration of these elements is [Xe] f, d, s.")
POINTS TO BE REMEMBERED: Chapter: 8 The d and f Block Elements 1. The elements of periodic table belonging to group to are known as d Block elements. 2. The general electronic configuration of these elements
Class XII Chapter 8 The d and f Block Elements Chemistry
Question 8.1: Write down the electronic configuration of: (i) Cr 3+ + (iii) Cu + (v) Co 2 + (vii) Mn 2+ (ii) Pm 3+ (iv) Ce 4+ (vi) Lu 2+ (viii) Th 4+ (i) Cr 3+ : 1s 2 2s 2 2p 6 3s 2 3p 6 3d 3 Or, [Ar]
UNIT VIII d & f Block Elements ( 5 : MARKS)
TEACHER RIENTED UNIT VIII d & f Block Elements ( 5 : MARKS) 1) Electronic configuration ) ccurrence and General characteristics of transition elements ) General trends in properties ) Preparation and properties
Transition Elements. Electronic Configuration- (n-1)d 1-10 ns 1-2 Physical Properties-
Transition Elements Electronic Configuration- (n-1)d 1-10 ns 1-2 Physical Properties- 1. Shows typical metallic character like high tensile strength, ductility, malleability, high thermal and electrical
Electronic Configuration General characteristics of transition elements 1. Atomic and ionic radii 2. Melting and boiling points
The d and f Block Elements Elements from 3 rd group to 12 th group in the Modern Periodic table are called d-block elements. In these elements their last electron enters in the penultimate d- sub shell.
1. Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d 5. What is its atomic number? (i) 25 (ii) 26 (iii) 27 (iv) 24
![1. Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d 5. What is its atomic number? (i) 25 (ii) 26 (iii) 27 (iv) 24](/thumbs/84/89512424.jpg "1. Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d 5. What is its atomic number? (i) 25 (ii) 26 (iii) 27 (iv) 24")
Unit 8 The d- and f- Block Elements I. Multiple Choice Questions (Type-I) 1. Electronic configuration of a transition element X in +3 oxidation state is [Ar]3d 5. What is its atomic number? 25 26 27 24
3. Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic number.
1. 1. Write down the electronic configuration of: (i) Cr 3+ (iii) Cu + (v) Co 2+ (vii) Mn 2+ (ii) Pm 3+ (iv) Ce 4+ (vi) Lu 2+ (viii) Th 4+ (a) Cr 3+ 1S 2 2S 2 2P 6 3S 2 3P 6 3d 3 (b) Cu + 1S 2 2S 2 2P
Chapter: 8 The d and f Block Elements
POINTS TO BE REMEMBERED: Chapter: 8 The d and f Block Elements 1. The elements of periodic table belonging to group 3 to 12 are known as d Block elements. 2. The general electronic configuration of these
Class XII Chapter 8 The d and f Block Elements Chemistry
Question 8.1: Write down the electronic configuration of: (i) Cr 3+ + (iii) Cu + (v) Co 2 + (vii) Mn 2+ (ii) Pm 3+ (iv) Ce 4+ (vi) Lu 2+ (viii) Th 4+ (i) Cr 3+ : 1s 2 2s 2 2p 6 3s 2 3p 6 3d 3 Or, [Ar]
d and f block elements in Nutshell
d and f block elements in Nutshell 1. The elements lying in the middle of periodic table belong to group 3 to 12 are known as d-block element. d block elements are also called as transition elements 2.General
Transition Metals. Thursday 09/10/15. Thursday, September 10, 15
Transition Metals Thursday 09/10/15 Agenda Review assigning oxidation numbers and practice with partners Start topic 13.1 First row d-block elements - Transition Metals Rules for assigning oxidation numbers
Melting and boiling points show no definite trends in the three transition series.
Physicochemical Properties a. Melting and Boiling Points: Melting and boiling points show no definite trends in the three transition series. The metals having the highest melting and boiling points are
Periodic Properties (Booklet Solution)
Periodic Properties (Booklet Solution) Foundation Builders (Objective). (B) Law of triads states that in the set of three elements arranged in increasing order of atomic weight, having similar properties,
d AND f BLOCK ELEMENTS
d AND f BLOCK ELEMENTS Electronic Configuration of Transition Metal/Ions The d-block element is called transition metal if it has partly filled d-orbitals in the ground state as well as in its oxidised
Chapter 23. Transition Metals and Coordination Chemistry
Chapter 23 Transition Metals and Coordination Chemistry The Transition Metals: Exact Definition Transition metal: An element whose atom has an incomplete d subshell or which can give rise to cations with
Periodic Properties (Booklet Solution)
Periodic Properties (Booklet Solution) Foundation Builders (Objective). (B) Law of triads states that in the set of three elements arranged in increasing order of atomic weight, having similar properties,
The Periodic Table. Periodic Properties. Can you explain this graph? Valence Electrons. Valence Electrons. Paramagnetism
Periodic Properties Atomic & Ionic Radius Energy Electron Affinity We want to understand the variations in these properties in terms of electron configurations. The Periodic Table Elements in a column
The d -Block Elements
The d-block Elements Introduction d-block elements locate between the s-block and p-block known as transition elements occur in the fourth and subsequent periods of the Periodic Table 2 d-block elements
15 THE TRANSITION METALS
15 THE TRANSITION METALS What is the difference between a d-block element and a transition element? Clue: Sc and Zn are not transition elements (see next slide) Write the electronic configurations of the
d- Block Elements
d- Block Elements Short Answer Questions: **1. Explain Werner s theory of coordination compounds with suitable examples A: The important postulates of Werner s theory are: i) In coordination compounds
Electronic Structure and Reactivity of the Transition Metals
Ashley Robison My Preferences Site Tools Popular pages MindTouch User Guide FAQ Sign Out If you like us, please share us on social media. The latest UCD Hyperlibrary newsletter is now complete, check it
Modified from: Larry Scheffler Lincoln High School IB Chemistry 1-2.1
Modified from: Larry Scheffler Lincoln High School IB Chemistry 1-2.1 The development of the periodic table brought a system of order to what was otherwise an collection of thousands of pieces of information.
Periodicity 4. Chlorides of the 3 rd period. d-block elements
Periodicity 4 Chlorides of the 3 rd period d-block elements Period 3 oxides Last class, we talked about the trends we see as we move across the period 3 oxides. We saw that the melting points decrease
GOVERNMENT OF KARNATAKA DEPARTMENT OF PRE UNIVERSITY EDUCATION, BANGALORE II PU 2014 VIKASANA TELE PROGRAME SUBJECT : CHEMISTRY
GOVERNMENT OF KARNATAKA DEPARTMENT OF PRE UNIVERSITY EDUCATION, BANGALORE II PU 2014 VIKASANA TELE PROGRAME SUBJECT : CHEMISTRY TOPIC : The d- and f- block Elements MANJUNATH BHAT LECTURER IN CHEMISTRY
What is the difference between a d-block element and a transition element? Clue: Sc and Zn are not transition elements.
TRANSITION METALS What is the difference between a d-block element and a transition element? Clue: Sc and Zn are not transition elements. Write the electronic configurations of the transition elements
SOLVED PROBLEMS. Problem 1: The chemical reactivity of lanthanides resemble to which other elements of the periodic table?
SOLVED PROBLEMS Board Level Questions Problem 1: The chemical reactivity of lanthanides resemble to which other elements of the periodic table? The chemical reactivity of the starting lanthanides resemble
REDOX REACTIONS. Chapters 4, 19.1 & 19.2 M. Shozi CHEM110 / 2014
REDOX REACTIONS Chapters 4, 19.1 & 19.2 M. Shozi CHEM110 / 2014 REDOX REACTIONS Reactions involve the transfer of electrons between reactants When a substance loses electrons, it undergoes oxidation: Ca(s)
IB Chemistry. Topic 3: Periodicity. Name
IB Chemistry Topic 3: Periodicity Name Topic 3 and 13 Periodicity Alkali metals: Group 1 elements. Strength of metallic bond gets weaker as atoms get larger. Anion: A charged ion. Decrease in size across
Chapter Seven Learning Objectives. Developing the Periodic Table
Chapter Seven Learning Objectives understand effective nuclear charge and its role in explaining periodic trends understand and predict periodic trends in atomic and ionic radii, ionization energy, and
Electron Configuration and Chemical Periodicity. Chapter Eight. AP Chemistry
Electron Configuration and Chemical Periodicity Chapter Eight AP Chemistry General Review Information about the Periodic Table Organization of the Elements 1869: Dmitri Mendeleev - Published an organizational
Transition Elements. pranjoto utomo
Transition Elements pranjoto utomo Definition What is transition metal? One of which forms one or more stable ions which have incompletely filled d orbitals. 30Zn? Definition Zink is not transition elements
INDIAN SCHOOL MUSCAT THIRD PRELIMINARY EXAMINATION CHEMISTRY ANSWER KEY
Roll Number Code Number 4 / INDIAN SCHOOL MUSCAT THIRD PRELIMINARY EXAMINATION CHEMISTRY ANSWER KEY CLASS: XII Sub. Code: 04 08.0.018 1. P type semiconductor 1. 1. (C H 5 ) N > (C H 5 ) NH > C H 5 NH >
THE d- AND f-block ELEMENTS
UNIT 8 THE d- AND f-blck ELEMENTS Some Important Terms : Compounds / Minerals / Reagents or mixtures etc of d- and f- block elements. 1. Argentite Ag 2 S 2. Argenti ferrous galena PbS + Ag 2 S 3. Azurite
Transition Metals and Coordination Chemistry
Transition Metals and Coordination Chemistry Transition Metals Similarities within a given period and within a given group. Last electrons added are inner electrons (d s, f s). 20_431 Ce Th Pr Pa d U
Periodicity Unit 3 The Periodic Table Physical and Chemical Properties Periodic Trends (period 3) First Row d-block Elements
Periodicity Unit 3 The Periodic Table Physical and Chemical Properties Periodic Trends (period 3) First Row d-block Elements Do You know these terms/phrases? Distinguish between the terms group and period
CHEM 1411 STUDY-GUIDE-for-TEST-3 (CHAPTERS 7, 8)
CHEM 1411 STUDY-GUIDE-for-TEST-3 (CHAPTERS 7, 8) 1. In the following diagram of a wave A) (a) is amplitude and (b) is wavelength D) (a) is amplitude and (b) is frequency B) (a) is frequency and (b) is
ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom.
160 ORBITAL DIAGRAM - A graphical representation of the quantum number "map" of electrons around an atom. 4p 3d 4s 3p 3s 2p 2s 1s Each blank represents an ORBITAL, and can hold two electrons. The 4s subshell
Periodicity SL (answers) IB CHEMISTRY SL
(answers) IB CHEMISTRY SL Syllabus objectives 3.1 Periodic table Understandings: The periodic table is arranged into four blocks associated with the four sublevels s, p, d, and f. The periodic table consists
Coordination Compounds. Compounds containing Transition Metals
Coordination Compounds Compounds containing Transition Metals Coordination Compounds Transition Metals Sc 6 Cu 1st row Y 6 Ag 2nd row La 6 Au 3rd row Properties of metals Not as reactive as group 1 or
voltmeter salt bridge
2012 H2 Chemistry Preliminary Examination Paper 3 Solutions 1 1 (a) (i) 4FeCr 2 O 4 + 8Na 2 CO 3 + 7O 2 2Fe 2 O 3 + 8Na 2 CrO 4 + 8CO 2 a = 8, b = 7, c = 2, d = 8, e = 8 Any dilute acid e.g. dilute H 2
CBSE Class 12 th Chemistry Solved Guess Paper
Solved Guess Paper 216 Subject hemistry lass XII Set II Time allowed: 3 hours Maximum Marks: 7 General Instructions: (i) All questions are compulsory. (ii) Q. No. 1 to 5 are very short answer type, carrying
HL Topics 3 and 13 : Periodicity (2)
HL Topics 3 and 13 : Periodicity (2) For each question choose the answer you consider to be the best. 1. An element is in period 3 and group 5 of the periodic table. How many electrons are present in the
DAV CENTENARY PUBLIC SCHOOL, PASCHIM ENCLAVE, NEW DELHI-87
Topic Name : General introduction d- & f- Block Elements (Class-12 Chemistry) The elements, which are placed between s and p block elements in the long fm of periodic table, are called transition elements.
M14/4/CHEMI/SPM/ENG/TZ1/XX CHEMISTRY. Monday 19 May 2014 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES
M14/4/CEMI/SPM/ENG/TZ1/XX 22146110 CEMISTRY standard level Paper 1 Monday 19 May 2014 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so. Answer
... [1] (ii) Draw a dot-and-cross diagram to show the bonding in NH 3
![... [1] (ii) Draw a dot-and-cross diagram to show the bonding in NH 3](/thumbs/76/73434679.jpg "... [1] (ii) Draw a dot-and-cross diagram to show the bonding in NH 3")
1 Chemists have developed models for bonding and structure which are used to explain different properties. (a) Ammonia, NH 3, is a covalent compound. Explain what is meant by a covalent bond. Draw a dot-and-cross
The Periodic Law Notes (Chapter 5)
The Periodic Law Notes (Chapter 5) I. History of the Periodic Table About 70 elements were known by 1850 (no noble gases) but there didn t appear to be a good way of arranging or relating them to study.
Complete the table to show the relative charge of each particle and the number of each particle found in a 140 Ce 2+ ion.
1 This question is about the elements with atomic numbers between 58 and 70 (a) Cerium, atomic number 58, is a metal Complete the table to show the relative charge of each particle and the number of each
25 Mn Ni Co Rh Fe Ru Os Uns (262) Une (266) 195.
1 Chem 64 Solutions to Problem Set #1, REVIEW 1. AO n l m 1s 1 0 0 2s 2 0 0 2p 2 1 1,0,1 3d 3 2 2, 1,0,1,2 4d 4 2 2, 1,0,1,2 4f 4 3 3, 2, 1,0,1,2,3 2. Penetration relates to the radial probability distribution
-"l" also contributes ENERGY. Higher values for "l" mean the electron has higher energy.
170 - Giving the four parameters will uniquely identify an electron around an atom. No two electrons in the same atom can share all four. These parameters are called QUANTUM NUMBERS. PRINCIPAL QUANTUM
MOSELEY and MODERN PERIODIC TABLE (designed by atomic numbers of elements)
MOSELEY and MODERN PERIODIC TABLE (designed by atomic numbers of elements) 1 PERIODS: Period number = Number of basic energy levels = The principal quantum number The horizontal lines in the periodic system
HOLIDAYS HOMEWORK SUMMER BREAK
HOLIDAYS HOMEWORK SUMMER BREAK 2018-2019 CLASS XII Subject- CHEMISTRY Assignment of general principle of isolation of elements 1. What is the difference between mineral and ore? 2. Write the principle
Jahn-Teller Distortions
Selections from Chapters 9 & 16 The transition metals (IV) CHEM 62 Monday, November 22 T. Hughbanks Jahn-Teller Distortions Jahn-Teller Theorem: Nonlinear Molecules in orbitally degenerate states are inherently
Reactions in Aqueous Solutions
Chapter 4 Reactions in Aqueous Solutions Some typical kinds of chemical reactions: 1. Precipitation reactions: the formation of a salt of lower solubility causes the precipitation to occur. precipr 2.
3. Write ground-state electron configurations for any atom or ion using only the Periodic Table. (Sections 8.3 & 9.2)
Lecture 2: learning objectives, readings, topics, and resources: 1. Understand the significance of the quantum numbers, understand how they can be used to code for the electron energy levels within atoms
2. Which of the following salts form coloured solutions when dissolved in water? I. Atomic radius II. Melting point III.
1. Which pair of elements reacts most readily? A. Li + Br 2 B. Li + Cl 2 C. K + Br 2 D. K + Cl 2 2. Which of the following salts form coloured solutions when dissolved in water? I. ScCl 3 II. FeCl 3 III.
Chem 105 Final Exam. Here is the summary of the total 225 points plus 10 bonus points. Carefully read the questions. Good luck!
May 3 rd, 2012 Name: CLID: Score: Chem 105 Final Exam There are 50 multiple choices that are worth 3 points each. There are 4 problems and 1 bonus problem. Try to answer the questions, which you know first,
MANY ELECTRON ATOMS Chapter 15
MANY ELECTRON ATOMS Chapter 15 Electron-Electron Repulsions (15.5-15.9) The hydrogen atom Schrödinger equation is exactly solvable yielding the wavefunctions and orbitals of chemistry. Howev er, the Schrödinger
Hydrated nickel(ii) salts are green in colour. Give the electron configuration of a nickel(ii) ion and hence state why the ion is coloured.
1. This question is about nickel compounds. (a) Hydrated nickel(ii) salts are green in colour. Give the electron configuration of a nickel(ii) ion and hence state why the ion is coloured.......... (b)
Patterns in the Chemical World
Topic12 Patterns in the Chemical World Unit 41 Periodic trends in elements and their compounds Unit 42 The transition metals Key C o ncepts Periodic trends in elements and their compounds Periodic variations
נושא מס' 8: המבנה האלקטרוני של אטומים. Electronic Structure of Atoms. 1 Prof. Zvi C. Koren
נושא מס' 8: המבנה האלקטרוני של אטומים Electronic Structure of Atoms 1 Prof. Zvi C. Koren 19.07.10 The Electron Spin From further experiments, it was evident that the e had additional magnetic properties
Transition Metals. Tuesday 09/22/15. Tuesday, September 22, 15
Transition Metals Tuesday 09/22/15 Agenda Topic 13.2 - Colored Complexes Topic 13.1 - First Row Transition Elements handout (this will be classwork for Wednesday & Thursday) The Periodic Table - The Transition
Unit 8 REDX REACTINS I. Multiple Choice Questions (Type-I) 1. Which of the following is not an example of redox reaction? Cu Cu Fe 3 + 3C Fe + 3C K + F KF BaCl S 4 BaS 4 + HCl. The more positive the value
NAME: SECTION #: Fill in your A00 number and name correctly on the scantron. Attempt all the questions and fill in the bubbles with your answers.
NAME: SECTION #: Chemistry 111 EXAM 2- Fall 2013 10/25/2013/12:00PM/Odago Fill in your A00 number and name correctly on the scantron. Attempt all the questions and fill in the bubbles with your answers.
AL CHEMISTRY d-block ELEMENTS Exercises from Past Exam Questions
Characteristics 1. What is the meaning of "d-block element"? AL CHEMISTRY d-block ELEMENTS Exercises from Past Exam Questions 2. Illustrate, with examples using nickel, two characteristic properties of
8. Relax and do well.
CHEM 1314 3;30 pm Theory Exam III John III. Gelder November 13, 2002 Name TA's Name Lab Section INSTRUCTIONS: 1. This examination consists of a total of 8 different pages. The last page include a periodic
DAT Bootcamp 1 of 6 Page
Quiz 2.1 Atomic Structure and the Bohr Model 1. There are four isotopes of calcium. Their mass numbers are 40, 42, 43, and 44. Please write the complete chemical symbol (superscript and subscript) for
3.1 Hydrogen Spectrum
3.1 Hydrogen Spectrum Light is electromagnetic radiation that can be produced at different energy levels. High energy light has a short wavelength (λ) and a high frequency (ƒ, ν) (gamma rays, x-rays, ultraviolet).
Magnetic Behavior and Electron Configuration of Compounds Version: 6.3
Magnetic Behavior and Electron Configuration of Compounds Version: 6.3 Michael J. Vitarelli Jr. Department of Chemistry and Chemical Biology Rutgers University, 610 Taylor Road, Piscataway, NJ 08854 I.
Today is Monday, October 9 th, 2017
In This Lesson: Valence Electrons and Lewis Dot Structures (Lesson 4 of 4) Today is Monday, October 9 th, 2017 Stuff You Need: Periodic Table Pre-Class: You ve probably heard of the special name we give
CHM 1045 Test #4 December 4, 2000
CHM 1045 Test #4 December 4, 2000 1. The scientist who was first to propose that electrons in an atom could have only certain energies was a. Planck. b. Einstein. c. Bohr. d. Rydberg. 2. Select the arrangement
Periodic Properties of the Elements. Chapter 7
Periodic Properties of the Elements Chapter 7 The Sizes of Atoms The bond distance: d The covalent radius of the atom Non-bonding atomic radius Atomic size varies consistently through the periodic table.
DAV CENTENARY PUBLIC SCHOOL PASCHIM ENCLAVE
DAV CENTENARY PUBLIC SCL PASCIM ENCLAVE GRUP 17 ELEMENTS Q1. With what neutral molecule is - isoelectronic? Ans. F Q2. Give the formula of the noble gas species that is isostructrural with (a) I4 - (b)
CHAPTER-3 CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES OF ELEMENTS
CHAPTER-3 CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES OF ELEMENTS Mandeleev s Periodic Law:- The properties of the elements are the periodic function of their atomic masses. Moseley, the English
Periodicity HL (answers) IB CHEMISTRY HL
Periodicity HL (answers) IB CHEMISTRY HL 13.1 First row d-block elements Understandings: Transition elements have variable oxidation states, form complex ions with ligands, have coloured compounds, and
p-block Elements Most Expected questions for CBSE Exam-2016 Structure depends on number of sum of bond pair and lone pair.
p-block Elements Most Expected questions for CBSE Exam-2016 Type -1 Draw the structure of the following compound: a) XeOF 4 b) XeF 2 c) BrF 3 d) XeF 4 e) BrF 5 f) SF 4 Hints:----- Structure depends on
ATOMIC STRUCTURE, ELECTRONS, AND PERIODICITY
ATOMIC STRUCTURE, ELECTRONS, AND PERIODICITY All matter is made of atoms. There are a limited number of types of atoms; these are the elements. (EU 1.A) Development of Atomic Theory Atoms are so small
Practice Exam Topic 9: Oxidation & Reduction
Name Practice Exam Topic 9: Oxidation & Reduction 1. What are the oxidation numbers of the elements in sulfuric acid, H 2 SO 4? Hydrogen Sulfur Oxygen A. +1 +6 2 B. +1 +4 2 C. +2 +1 +4 D. +2 +6 8 2. Consider
Written as per the revised syllabus prescribed by the Maharashtra State Board of Secondary and Higher Secondary Education, Pune.
Written as per the revised syllabus prescribed by the Maharashtra State Board of Secondary and Higher Secondary Education, Pune. Perfect Chemistry II STD. XII Sci. Salient Features Exhaustive coverage
Chemistry Higher level Paper 1
Chemistry Higher level Paper 1 Monday 14 November 2016 (morning) 1 hour Instructions to candidates Do not open this examination paper until instructed to do so. Answer all the questions. For each question,
10.3. The Half-Reaction Method for Balancing Equations. 482 MHR Unit 5 Electrochemistry
10.3 Section Preview/ Specific Expectations In this section, you will investigate oxidationreduction reactions by reacting metals with acids and by combusting hydrocarbons write balanced equations for
Class XI Chapter 8 Redox Reactions Chemistry
Question 8.1: Assign oxidation numbers to the underlined elements in each of the following species: (a) NaH 2 PO 4 (b) NaHSO 4 (c) H 4 P 2 O 7 (d) K 2 MnO 4 (e) CaO 2 (f) NaBH 4 (g) H 2 S 2 O 7 (h) KAl(SO
M11/4/CHEMI/SPM/ENG/TZ2/XX CHEMISTRY STANDARD LEVEL PAPER 1. Monday 9 May 2011 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES
M11/4/CHEMI/SPM/ENG/TZ/XX 116116 CHEMISTRY STANDARD LEVEL PAPER 1 Monday 9 May 011 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so. Answer
Chemistry of Transition Metals. Part 1. General Considerations
Chemistry of Transition Metals Part 1. General Considerations Filling of 3d, 4d, and 5d shells In s- and p-block, electrons added to outer shell In I d-block, electrons added d to penultimate t shell expanding
Chemistry Standard level Paper 1
M15/4/CHEMI/SPM/ENG/TZ1/XX Chemistry Standard level Paper 1 Thursday 14 May 2015 (afternoon) 45 minutes Instructions to candidates Do not open this examination paper until instructed to do so. Answer all
SAMPLE EXAMINATION BOOKLET
S SAMPLE EXAMINATION BOOKLET New Zealand Scholarship Chemistry Time allowed: Three hours Total marks: 40 EXAMINATION BOOKLET Question ONE TWO Mark You should answer ALL the questions in this booklet. THREE
Made the FIRST periodic table
Made the FIRST periodic table 1869 Mendeleev organized the periodic table based on the similar properties and relativities of certain elements Later, Henri Moseley organized the elements by increasing
Anglo-Chinese School (Independent) International Baccalaureate Diploma Programme Scheme Of Work Year 5 Chemistry HL
Topic 1 Quantitative Chemistry Topic 11 Measurement and Data Processing Topic 9 Redox equation 1.1 The mole concept and Avogadro s constant a) Determine the number of particles and the amount of substance
Periodic Relationships Among the Elements
When the Elements Were Discovered Periodic Relationships Among the Elements Chapter 8 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 2 ns 1 Ground State Electron
Summation of Periodic Trends
Summation of Periodic Trends Factors Affecting Atomic Orbital Energies The Effect of Nuclear Charge (Z effective ) Higher nuclear charge lowers orbital energy (stabilizes the system) by increasing nucleus-electron
100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals.
2.21 Ionic Bonding 100% ionic compounds do not exist but predominantly ionic compounds are formed when metals combine with non-metals. Forming ions Metal atoms lose electrons to form +ve ions. Non-metal
Lecture 19: Magnetic properties and the Nephelauxetic effect
Lecture 19: Magnetic properties and the Nephelauxetic effect sample balance thermometer connection to balance left: the Gouy balance for Gouy Tube determining the magnetic susceptibility of materials north
Summation of Periodic Trends Factors Affecting Atomic Orbital Energies
Summation of Periodic Trends Factors Affecting Atomic Orbital Energies The Effect of Nuclear Charge (Z effective ) Higher nuclear charge lowers orbital energy (stabilizes the system) by increasing nucleus-electron
I. Multiple Choice Questions (Type-I) 1. Which of the following is not an example of redox reaction? Cu + H HCl. BaSO 4
Unit 8 REDX REACTINS REAC I. Multiple Choice Questions (Type-I) 1. Which of the following is not an example of redox reaction? Cu Cu Fe 2 3 + 3C 2Fe + 3C 2 2K + F 2 2KF BaCl 2 S 4 BaS 4 + 2HCl 2. The more
Electron Configuration and Chemical Periodicity
Electron Configuration and Chemical Periodicity The Periodic Table Periodic law (Mendeleev, Meyer, 1870) periodic reoccurrence of similar physical and chemical properties of the elements arranged by increasing
Chapter 8. Electron Configuration and Chemical Periodicity 10/17/ Development of the Periodic Table
Chapter 8 Electron Configuration and Chemical Periodicity 8-1 Electron Configuration and Chemical Periodicity 8.1 Development of the Periodic Table 8.2 Characteristics of Many-Electron Atoms 8.3 The Quantum-Mechanical
Unit 2 - Electrons and Periodic Behavior
Unit 2 - Electrons and Periodic Behavior I. The Bohr Model of the Atom A. Electron Orbits, or Energy Levels 1. Electrons can circle the nucleus only in allowed paths or orbits 2. The energy of the electron
Scholarship 2009 Chemistry
9 3 1 0 2 931020 S For Supervisor s Scholarship 2009 Chemistry 9.30 am Saturday 28 November 2009 Time allowed: Three hours Total marks: 48 Check that the National Student Number (NSN) on your admission
CHM2045 S13: Exam # MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
CHM2045 S13: Exam #1 2013.02.01 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What value of l is represented by a d orbital? A) 2 B) 1 C) 0 D)
M09/4/CHEMI/SPM/ENG/TZ1/XX+ CHEMISTRY. Monday 18 May 2009 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES
M09/4/CHEMI/SPM/ENG/TZ1/XX+ 22096110 CHEMISTRY standard level Paper 1 Monday 18 May 2009 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES Do not open this examination paper until instructed to do so.