Q. The number of lone pair of electrons on the central atoms of and respectively, are

 3097  190 WBJEEWBJEE 2015Chemical Bonding and Molecular Structure Report Error

Solution:

The number of lone pairs of electrons on the central atoms of and are and respectively.
image Number of lone pairs = 2
image Number of lone pair = 1
image Number of lone pair = 1
image Number of lone pairs = 3.