Question

Question 4.31 What do you understand by bond pairs and lone pairs of electrons? Illustrate by giving one example of each type.

Class XI Chemical Bonding and Molecular Structure Page 131

Answer 1

covalent bond is formed by mutual sharing of electrons .
I mean when two atoms are comparable electronegativity value , share electron electron pair with each other , the bond formed is called covalent bond. The shared pair of electrons present between the bonded atoms are called Bond pair .
and the unshared pair of electrons surrounding the bonded atoms are called lone pair .

Answer 2

Bond Pairs—The electons which are present be-tween the two atoms and are shared by them are called bonded pair of electrons.

Lone Pairs—The unshared pair of electrons which are present on the atom.