Question

In allene $\left(C_3{H}_4\right)$, the type(s) of hybridization of the carbon atoms is (are):

• A. $s{p}^2$ and sp
• B. $s{p}^2$ and $s{p}^3$
• C. sp and $s{p}^3$
• D. only $s{p}^2$

Answer 1

The correct option is A $s{p}^2$ and sp

Allene: $H_{2}C=C=C{H}_2$. The central carbon is attached to other carbons by two sigma and two pi bonds so it's hybridisation will be $sp$. The terminal carbon is attached to other carbon and hydrogen by 3 sigma and 2 pi bonds and hence, it's hybridisation will be $s{p}^2$.