question_answer

Hybridisation, shape and magnetic moment of \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]ion

A) \[ds{{p}^{2}},\]square planar, zero

B)  \[ds{{p}^{2}},\]square planar, 1.73

C)  \[s{{p}^{3}}{{d}^{2}},\]octahedral, zero

D)  \[{{d}^{2}}s{{p}^{3}},\]octahedral, 1.73

Correct Answer: A

Solution :

                \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]ion has\[ds{{p}^{2}}\]hybridisation, zero magnetic moment and square planar structure. It has no unpaired electron hence, its magnetic moment is zero.