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  4. The number of unpaired electrons in [ Ni ( CO )4] is

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Q. The number of unpaired electrons in $\left[ Ni ( CO )_4\right]$ is

NTA AbhyasNTA Abhyas 2022

Solution:

$Ni\left(\right.Z=28\left.\right):3d^{8}4s^{2}$
Oxidation state of $Ni$ in $\left.\left[ Ni ( CO )_4\right)\right]=0$
Solution
Number of unpaired electrons = 0.