question_answer

Which of the following compounds is square planar and does not have any unpaired electron?

A)  \[Ni{{(CO)}_{4}}\]                          

B)  \[{{[Ni{{({{H}_{2}}O)}_{6}}]}^{2+}}\]

C)  \[{{[NiC{{l}_{4}}]}^{2-}}\]            

D)  \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]

Correct Answer: D

Solution :

                The geometry of\[{{[Ni{{(CN)}_{4}}]}^{2-}}\]is square planar. It has\[ds{{p}^{2}}\]hybridisation. It is diamagnetic in nature, i.e., does not have any unpaired electron.