question_answer

Directions: Based on following paragraph.

In certain polar solvents, \[\text{PC}{{\text{l}}_{\text{s}}}\]undergoes an ionization reaction in which \[\text{C}{{\text{l}}^{-}}\]ion leaves one \[\text{PC}{{\text{l}}_{\text{5}}}\]molecule and attaches itself to another. \[\text{2PC}{{\text{l}}_{\text{5}}}\text{PCl}_{\text{4}}^{\text{+}}\text{+PCl}_{\text{6}}^{\text{-}}\]

Number of lone pairs around phosphorus in\[\text{PC}{{\text{l}}_{\text{5}}}\text{,PCl}_{\text{4}}^{\text{+}}\]and \[\text{PCl}_{6}^{-}\]are respectively

A)  0, 1, 2                        

B)  0, 0, 0

C)  1, 2, 3                        

D)  0, 2, 1

Correct Answer: B

Solution :

\[PC{{l}_{5}}\Rightarrow \]  (no lone pair of electron)