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Question

Hybridization and geometry of [Ni(CN)4]2− are:

A
sp2d and tetrahedral
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B
sd3 and square planar
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C
sp3 and tetrahedral
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D
dsp2 and square planar
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Solution

The correct option is D dsp2 and square planar
[Ni(CN)4]2 is a square planar geometry formed by dsp2 hybridisation. [Ni(CN)4]2 is diamagnetic, so Ni2+ionhas3d^8$ outer configuration with two unpaired electrons.

For the formation of the square planar structure by dsp2 hybridisation, two unpaired d-electrons are paired up due to energy made available by the approach of ligands, making one of the 3d orbitals empty.

Hence, option D is correct.

1453910_739662_ans_1b88a50e6b3142878d714df46d9472b7.png

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