Q5 / 60 · JEE Advanced 2012 (Paper 1) · Chemistry

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

  • A
    $s p$ and $s p^{3}$
  • Correct answer
    B
    $s p$ and $s p^{2}$
  • C
    only $s p^{3}$
  • D
    $s p^{2}$ and $s p^{3}$

Solution

Allene $\left(\mathbf{C}_{3} \mathbf{H}_{4}\right)$ is $\stackrel{s p^{2}}{\mathrm{H}_{2}} \mathrm{C}=\stackrel{s p}{\mathrm{C}}=\stackrel{s p^{2}}{\mathrm{CH}_{2}}$

Hence, the correct answer is option: 'B'.

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