Q.

Indicate the hybridization and Magnetic nature of $Ni {(CO)}_{4}$

Moderate

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dsp², Diamagnetic

sp³, Paramagnetic

sp³, Diamgnetic

dsp²Paramagnetic

answer is B.

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Detailed Solution

$Ni$ is in zero oxidation state in $Ni {(CO)}_{4}$ .

So the electronic configuration of Ni is $3 d^{8} 4 s^{2}$ .
As $CO$ is a strong ligand, so all the electrons are paired in the d orbital as shown in the given diagram

so it is paramagnetic

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