A) \[{{[Ni{{(CN)}_{4}}]}^{2-}}\]
B) \[{{[CuC{{l}_{4}}]}^{2-}}\]
C) \[{{[Co{{F}_{6}}]}^{3-}}\]
D) \[{{[NiC{{l}_{4}}]}^{2-}}\]
Correct Answer: A
Solution :
[a] Electronic configuration of \[N{{i}^{2+}}\] in \[{{[Ni{{(CN)}_{4}}]}^{2-}}\] is \[N{{i}^{2+}}=3{{d}^{8}}4{{s}^{o}}\] |
\[\text{N}{{\text{i}}^{\text{2+}}}\]has dsp2 hybridisation, as \[\text{C}{{\text{N}}^{-}}\]is a strong |
field ligand. |
\[\therefore {{[Ni{{(CN)}_{4}}]}^{2-}}\]is diamagnetic (because of the absence of unpaired electrons). |
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