How many sigma and pi bonds are present in a molecule of cumulene?

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How many sigma and pi bonds are present in a molecule of cumulene?

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Answer 1 · 2016-04-09T10:10:23

$7 σ + 3 π$ $7sigma + 3pi$

Explanation:

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This is a molecule of cumulene, $C_{4} H_{4}$ $C_4H_4$ .

Single bonds are one $σ$ $sigma$ -bond, while double bonds are one $σ$ $sigma$ and one $π$ $pi$ -bond.

$σ$ $sigma$ and $π$ $pi$ -bonds are just ways in which electron orbitals interact to form bonds - $σ$ $sigma$ are stronger bonds, but you can't have more than one between the same two atoms.

Cumulene has three double bonds and four single bonds, or,

$3 (σ + π) + 4 σ = 7 σ + 3 π$ $3(sigma + pi) + 4sigma = 7sigma + 3pi$

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How many sigma and pi bonds are present in a molecule of cumulene?

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