# In allene

Question:

In allene $\left(\mathrm{C}_{3} \mathrm{H}_{4}\right)$, the type(s) of hybridization of the carbon atoms is (are):

1. only $\mathrm{sp}^{2}$

2. $\mathrm{sp}^{2}$ and $\mathrm{sp}$

3. $s p$ and $\mathrm{sp}^{3}$

4. $\mathrm{sp}^{2}$ and $\mathrm{sp}^{3}$

Correct Option: , 2

Solution: