First slide

Aplicaitons of VBT

Question

The number of unpaired electrons in the square planar complex ${[Ni {(CN)}_{4}]}^{2 -}$ is

Easy

A

2
B

3
C

0
D

1

Solution

$\begin{array}{l} {CN}^{-} is a strong field ligand . \\ Ni . . [Ar] 4 s^{2} 3 d^{8} \\ {Ni}^{+ 2} . . [Ar] 3 d^{8} \end{array}$

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