Question

The state of hybridization of the central carbon atom in $1,2$-propadiene (allene) is:

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

Answer 1

Answer: (C)

$sp$

$1,2$-propadiene is $C{H}_2=C=C{H}_2$.

The bond angle formed by the $3$ carbon atoms is ${180}^{\circ }$, indicating a linear geometry for the carbons of allene.

The state of hybridisation of the central carbon in $1,2$-propadiene is $sp$.