Answer
See the explanation
Work Step by Step
Use the localized electron model to describe the bonding in $C_{2}H_{2}$ (exists as HCCH).
In the localized electron model, the bonding in $C_{2}H_{2}$ (acetylene) can be described as follows:
Each carbon atom has four valence electrons. The two carbon atoms form a triple bond between them, resulting in a total of six shared electron pairs.
Each hydrogen atom contributes one electron to form a single bond with a carbon atom, resulting in a total of two shared electron pairs between the carbon and hydrogen atoms.
The final structure can be represented as:
H-C≡C-H
The carbon atoms are sp hybridized, with two unhybridized p orbitals participating in the triple bond.
