# Objectives

The students will be able to
• Know the discovery of electron, proton and neutron and their characteristics
• Describe Thomson, Rutherford and Bohr model of atoms
• Understand the special features of the quantum mechanical model of atom
• Understand the nature of electromagnetic radiation and Planck's quantum theory
• State the de Broglie relation and Heisenberg uncertainity principle
• Define atomic orbital in terms of quantum numbers
• State Aufbau principle and Hund's rule of maximum multiplicity
• Write the electronic configuration of atoms