Which of the following complex ions, which is diamagnetic in nature ?
A
[CcF6]3−
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B
[NiCl4]2−
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C
[Ni(CN)4]2−
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D
[CuCl2]2−
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Solution
The correct option is A[CcF6]3− In $[Ni (CN)_4]^{2-}$Nihasdsp^2$ hybridisationCN− is a strong field ligand. Since all electrons are Paired, it is diamagnetic.