question_answer

The number of lone pairs of electrons on the central atoms of \[{{\text{H}}_{\text{2}}}\text{O,SnC}{{\text{l}}_{\text{2}}}\text{,PC}{{\text{l}}_{\text{3}}}\]respectively, are

A)  2,1, 1,3          

B)  2,2, 1,3

C)  3, 1, 1, 2          

D)  2,1, 2, 3

Correct Answer: A

Solution :

 The number of lone pairs of electrons on the central atoms of\[{{\text{H}}_{\text{2}}}\text{O,}\,\text{SnC}{{\text{l}}_{\text{2}}}\text{,PC}{{\text{l}}_{\text{3}}}\] and \[\text{Xe}{{\text{F}}_{\text{2}}}\]are 2, 1, 1 and 3 respectively. Number of lone pairs = 2 Number of lone pair =1 Number of lone pair =1 Number of lone pairs = 3