The correct order of hybridisation of the central atom in the following species `NH_(3), [PtCl_(4)]^(2-), PCl_(5)` and `BCl_(3)` is
(At. No. Pt = 78)
A. `dsp^(2), dsp^(3), sp^(3) and sp^(3)`
B. `sp^(3), dsp^(2), dsp^(3), sp^(2)`
C. `sp^(2), dsp^(2), dsp^(3), sp^(2)`
D. `dsp^(2), sp^(2), sp^(3), dsp^(3)`

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Correct Answer - B
In `NH_(3)` N is `sp^(3)` hybridised
In `[PtCl_(4)]^(2-), Pt^(2+) is dsp^(2)`-hybridised.
`In PCl_(5), P is dsp^(3)`-hybridised.
In `BCl_(3),B is sp^(2)`-hybridised.

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