Which among the following possesses a $s p$ carbon in its structure?

Which among the following possesses a $s p$ carbon in its structure?
  1. $\mathrm{CH}_2=\mathrm{CCl}-\mathrm{CH}=\mathrm{CHBr}$
  2. $\mathrm{CBr}_4$
  3. $\mathrm{CH}_2=\mathrm{C}=\mathrm{CH}_2$
  4. $\mathrm{C}_6 \mathrm{H}_5-\mathrm{CCl}_3$

Solution

In compound $\stackrel{3}{\mathrm{C}} \mathrm{H}_2=\stackrel{2}{\mathrm{C}}=\stackrel{1}{\mathrm{C}} \mathrm{H}_2$, the second carbon is $s p$ hybridised.

Asked in: AP EAMCET 2021 (24 Aug Shift 2)

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