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Question

Amongst the following molecules, the one with the highest bond multiplicity is:


  1. Ethene

  2. Ethyne

  3. Ethane

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Solution

The correct option is B

Ethyne


Explanation for correct option

B. Ethyne

Bond multiplicity:

  • Bond multiplicity is determined by the number of bonds in a molecule.
  • The more electrons the two atoms will share, the stronger will be the bond.
  • The multiplicity of a chemical bond is determined by the number of electron pairs participating in chemical bonding.
  • Among ethaneC2H6, ethene C2H4, and ethyne C2H2; the highest multiplicity will be in the ethyne molecule due to the presence of a triple bond.

Explanation for incorrect options

(A)Ethene

(C)Ethane

From the above structure, it can be said that bond multiplicity will be highest in the ethyne molecule. Thus options A and C stand incorrect.

Hence, the correct option is B i.e. ethyne.


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