Multiple choice

Which of the following allotropes of carbon has sp orbital hybridisation?

  1. Linear acetylenic carbon

  2. Lonsdaleite

  3. Carbon nanofoam

  4. Glassy carbon
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A Correct answer
Explanation

Linear acetylenic carbon (LAC) is an allotrope of carbon that has the chemical structure -(C≡C)n - as a repeating chain.The carbon atoms in this form are each linear in geometry  with sp orbital hybridisation. It is a polymer with alternating single and triple bonds.

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