Question

1. Identify the types of polarization that occur in NaCl, Polyethylene, Al2O3 and

Answer 1

The term polarization means the bond formation between two polar atoms. For example : when a hydrogen atom combined with a chlorine atom the polar chlorine atom makes the non polar hydrogen atom into polar molecule under dipole-induced forces. This combination is known as polarization.

Polarisation can be different types:-

1. Ionic polarisation means while forming ionic bonds,one species donates electron to another cation and anion takes place and polarisation extent becomes very high for that bond.positive and negative pole that is cation and anion attracts each other and forms bond.
2. If an ionic bond is present in any molecule,it’s pole that is positive and negative counterparts would polarise its neighbouring covalent bond that will be a induced polarisation.
3. If cation size is very small and anion size is very big in an ionic bond that effective nuclear charge of cation attracts loosely bound penultimate shell electron cloud of anion and distorts anionic electron cloud shape.This is ion polarisation.From above information. NaCl-ionic polarization polyethylene -induced polarization. and Al2O3 is ion polarization