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Question

Specify the hybridisations of the central atoms in N3, NOCl and N2O.

A
sp,sp2,sp
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B
sp,sp,sp3
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C
sp2,sp,sp
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D
sp2,sp2,sp
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Solution

The correct option is A sp,sp2,sp
a. The structure of N3 is:

The steric number of the central nitrogen atom is 2 (two sigma bond).
Thus, it is sp hybridised.

b. The structure of NOCl is:



So the steric number of the central nitrogen atom is 3 (two sigma bonds and one lone pair of electrons). Thus, it is sp2 hybridised.

c. The possible structure of N2O is:



In this structure, the steric number of the central N atom is 2 (two sigma bonds). Thus, the central N atom is sp hybridised.

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