In allene $\left(\mathrm{C}_3 \mathrm{H}_4\right)$, the type(s) of hybridization of the carbon atoms is…

In allene $\left(\mathrm{C}_3 \mathrm{H}_4\right)$, the type(s) of hybridization of the carbon atoms is (are) :
  1. $\mathrm{sp}$ and $\mathrm{sp}^3$
  2. $\mathrm{sp}^2$ and $\mathrm{sp}$
  3. only $\mathrm{sp}^2$
  4. $\mathrm{sp}^2$ and $\mathrm{sp}^3$

Asked in: JEE Main 2014 (11 Apr Online)

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