Chemistry - Organic and Inorganic Chemistry (P-I)

1.     Define the term periodicity, explain the cause of periodicity

2.     Explain the ionic and atomic radii with example

3.     What are the applications of ionization energy?

4.     Justify order of Electron affinity of halogen :  Cl > Br > I

5.     Define electro negativity and write note on Pauling Scale