polar and nonpolar covalent bonds

Let us learn about polar and nonpolar covalent bonds

Covalent bond is a bond in that the electrons are shared by the partner atoms.

Polar bond is simply a type of covalent bond in that the electrons are

shared but not equally. 

The greater the electro negativity difference, the more ionic the bond is. Bonds which are partly ionic are said to be polar covalent bonds.

Nonpolar covalent bonds Cl-Cl. since the 2 atoms are identical, they will share electrons equally.

Polar covalent bonds: H-O-H oxygen is an "electron hog" & so the electrons will spend more time with the oxygen than with the hydrogen, sharing unequally.

In our next blog we shall learn about repressible operon I hope the above explanation was useful.Keep reading and leave your comments.