Question #e1818

1 Answer
Oct 2, 2016

Summing up the number of σ-bond formed by the desired atom (here N) and the number of lone pair on it we can easily know the hybridization of it.

If the sum is 2 hybridizationsp

If the sum is 3 hybridizationsp2

If the sum is 4 hybridizationsp3

If the sum is 5 hybridizationsp3d

If the sum is 6 hybridizationsp3d2

Inspecting the Lewis structure of HCN: we see that N-atom has one σ-bond and one lone pair so sum is 2.
Hence the hybridization is sp.