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The coordination number of Ni^(2+) is 4....

The coordination number of `Ni^(2+)` is 4.
`NiCl_(2) + KCN ("excess") rarr A ("cyano comples")`
`NiCl_(2) + conc. HCl ("excess") rarr B ("chloro complex")`
Predict the magnetic nature of A and B.

A

Both diamagnetic.

B

A is diamagnetic and B is paramagnetic with one unpaired electrons.

C

A is diamagnetic and B is paramagnetic with two unpaired electrons.

D

Both are paramagnetic.

Text Solution

Verified by Experts

The correct Answer is:
C
`A to underset(dsp^(2)("diamag".))(K_(2)[Ni(CN)_(4)])," "B to underset(sp^(3)(2 u.p.e^(-)))(K_(2)[NiCl_(4)])`
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