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NEETChemistryChemical Bonding and Molecular Structure

In the molecule but- 1 -en- 3 -yne, what is the number of bonds formed exclusively by sp-sp^2 carbon-carbon overlap, and the total number of bonds, respectively?

Options

  1. A2 and 3
  2. B1 and 2
  3. C1 and 3
  4. D3 and 3

Correct answer

C. 1 and 3

Step-by-step solution

First, draw the structure of but- 1 -en- 3 -yne: CH ₂ =CH-C CH . Next, assign the hybridization state to each carbon atom: C ₁ (in CH ₂= ) is bonded to 3 atoms with no lone pairs sp^2 C ₂ (in =CH- ) is bonded to 3 atoms with no lone pairs sp^2 C ₃ (in -C ) is bonded to 2 atoms with no lone pairs sp C ₄ (in CH ) is bonded to 2 atoms with no lone pairs sp Now, analyze the carbon-carbon bonds: The C ₁ =C ₂ bond is formed by sp^2-sp^2 overlap. The C ₂ -C ₃ bond is formed by sp^2-sp overlap. The C ₃ C ₄ bond is formed b

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