Question

The hybridization of any of the Carbon atoms in C2H2 is .

• A. $sp$
• B. ${sp}^2$
• C. ${sp}^3$

Answer 1

The correct option is A $sp$

Let's start with the basics of hybridization here.
We know how to write the electronic configuration of carbon.

$\to$ 1sp hybrid orbital is used for overlapping with 1s orbital of H

$\to$ 1sp hybrid orbital is used for overlapping with 1sp hybrid orbital of second carbon.