pretation of wave functions, Molecular Orbital theory of diatomic molecules and metallic bonding. (No of lectures-7) 2. Spectroscopy and photochemistry: Interaction and radiation with matter, microwave, IR and UV-VIS spectroscopy: Basic Concepts of selection rules and application to molecular structure determination. (No of lectures-5) Module – 2 (To develop the basic concepts of thermodynamics and its application to chemical systems) 1. Thermodynamics and chemical equilibrium: variables of states: Ist law of thermodynamics and applications to ideal gas, enthalpy and heat capacity, Measurement of enthalpy and heat capacity, thermo-chemical calculation 2nd law of thermodynamics concepts of entropy, entropy in physical and chemical changes, molecular interpretation of entropy. The free energy concepts: application to gases: Gibbs Helmholtz equation: free energy change and criterion of spontaneity of chemical equation; free energy change and criterion of spontaneity of chemical reactions and chemical equilibrium. Physical, ionic and chemical equilibrium. (No of lecturers- 9) 2. Phase rule: one and two component systems H2O , S, Cd-Bi and Fe-C system