Question

Assertion (A) The coordination complexes ${\left[Ni(CN{)}_4\right]}^{2-}$ and ${\left[NiC{l}_4\right]}^{2-}$ have not the same shape and similar magnetic behaviour.
Reason (R) Both are square planar in shape but ${\left[Ni(CN{)}_4\right]}^{2-}$ is diamagnetic but ${\left[Ni(Cl{)}_4\right]}^{2-}$ is paramagnetic.

• A. Both $A$ and $R$ are correct; $R$ is the correct explanation of $A$.
• B. Both $A$ and $R$ are correct; $R$ is not the correct explanation of $A$.
• C. $A$ is correct; $R$ is incorrect.
• D. $R$ is correct; $A$ is incorrect.

Answer 1

Answer: (C)

The coordination complexes ${\left[Ni(CN{)}_4\right]}^{2-}$ and ${\left[NiC{l}_4\right]}^{2-}$ have not the same shape also differ in magnetic behaviour also.