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

Explanation

Covalent bonds are formed by mutual sharing of elecrons between the two atoms . The shared pairs of
electrons thus present between the bonded atoms are called bond pairs.
All the electrons of an atom may not participate in the bonding . The electron pairs present on the atoms
which do not take in bonding are called lone paris of electrons . For example ,in ` CH_(4)(H:overset(H)overset(. .)underset(. .)C:H)`,
there are only 4 bond pairs in ` H_(2) O CH_(4)(H:overset(. .)underset(. .)C:H)` , there are two bond pairs and two lone pairs .