JEE - Study Guide - 3. Atomic Structure

Text Book
Modern's abc of Chemistry by Dr. S.P. Jauhar for Class XI CBSE

Sections in the Chapter

3.1 Fundamental particles
3.2 Thomson’s Atomic Model
3.3 Rutherford’s Scattering Experiment
3.4 Concept of Atomic Number and Discovery of Neutron
3.5 Developments Leading to the Bohr Model of Atom
3.6 Nature of Light and Electromagnetic Radiation
3.7 Particle Nature of Electromagnetic Radiation and Planck’s Quantum Theory
3.8 Atomic Spectra
3.9 Failure of Rutherford Model
3.10 Concept of Energy Levels or Orbits
3.11 Modern Concept of Structure of an Atom: Quantum Mechanical Model
3.12 Wave Mechanical Model of Atom and Concept of Atomic Orbital
3.13 Quantum Numbers
3.14 Pauli’s Exclusion Principle
3.15 Shapes of Orbitals or Boundary Surface Diagrams
3.16 Energy Level Diagram for Electrons in an Atom
3.17 Electronic Configuration of Atoms


Conceptual Questions with Answers: 35
Additional Numerical Problems for Practice: 8
Revision Exercises
Very Short Answer questions 16
Short Answer Questions 42
Long Answer Questions 3

Competition File
Numerical Problems 20
Objective Questions: 47
Fill in the blanks: 10
True or False: 10


Study Plan

Day 1

3.1 Fundamental particles
3.2 Thomson’s Atomic Model
3.3 Rutherford’s Scattering Experiment

Day 2

3.4 Concept of Atomic Number and Discovery of Neutron
Ex. 3.1 to 3.3
Practice Problems 3.1 to 3.9

Day 3

3.5 Developments Leading to the Bohr Model of Atom
3.6 Nature of Light and Electromagnetic Radiation

Ex. 3.4, 3.5,3.6
P.P. 3.10 to 3.15



Day 4

3.7 Particle Nature of Electromagnetic Radiation and Planck’s Quantum Theory
Ex. 3.7 to 3.16

Day 5
P.P 3.16 to 3.24

Day 6
3.8 Atomic Spectra
Ex. 3.17, 3.18
P.P. 3.25 t 3.27

3.9 Failure of Rutherford Model

Day 7
3.9 Failure of Rutherford Model
3.10 Concept of Energy Levels or Orbits
Ex. 3.19 to 3.23
P.P 3.28 to 3.32

Day 8
Bohr’s Theory and Concept of Quantisation
3.11 Modern Concept of Structure of an Atom: Quantum Mechanical Model
Ex. 3.24 to 3.29
P.P. 3.33, 3.34

Day 9

3.12 Wave Mechanical Model of Atom and Concept of Atomic Orbital

3.13 Quantum Numbers
3.14 Pauli’s Exclusion Principle


Day 10
Ex. 3.30 to 3.33
P.P. 3.35 to 3.37

3.15 Shapes of Orbitals or Boundary Surface Diagrams


Day 11

3.16 Energy Level Diagram for Electrons in an Atom
3.17 Electronic Configuration of Atoms

Day 12
P.P 3.38 to 3.46

Revision Period

Day 13
Conceptual Questions with Answers: 1 to 18

Day 14

Conceptual Questions with Answers: 19 to 35

Day 15
Additional Numerical Problems for Practice: 8

Day 16
Very Short Answer questions 16

Day 17
Short Answer Questions 42

Day 18
Study Competition File

Day 19
Numerical Problems 1 to 10

Day 20
Numerical Problems 11 to 20
Day 21

Objective Questions: 1 to 24

Day 22
Objective Questions: 25 to 47

Day 23

Fill in the blanks: 10

Day 24

True or False: 10


Updated 1 May 2016,  11 Mar 2009