Answer:
The correct answer is - sp hybridization.
Explanation:
The molecular structure line with a carbon bound to the hydrogen with the single sigma bond and with 2 pi bond and one single sigma bond with carbon Nitrogen triple covalent bond.
To calculate the hybridization of an element like carbon by adding the sigma bond and the lone pair of that atom as here in HCN molecule, zero lone electrons and two sigmas bond the C atom includes sp-hybridized orbital.
