1

Developments Leading to Bohr’s Model of Atom

2

Problem Solving

3

Planck’s Quantum Theory

4

Photoelectric Effect

5

Problems 1,2,3

6

Problems 4,5

7

Evidence for Quantized Electronic Spectra

8

Line Spectrum of Hydrogen and Bohr’s Model for Hydrogen Atom – Part 1

9

Bohr’s Model for Hydrogen Atom – Part 2

10

Limitations of Bohr’s Model and Solved Problems

11

Towards Quantum Mechanical Model of Atom

12

Heisenberg’s Uncertainty Principle

13

Quantum Mechanical Model of Atom

14

Orbitals and Quantum Numbers

15

Atomic Orbitals

16

Atomic Orbitals; p orbital & d orbital

17

Energies of atomic orbitals

18

Filling of atomic orbitals

19

Electronic configuration of elements – Part 1

20

Electronic configuration of elements – Part 2