Intramolecular Force and Potential Energy

AP Chemistry· difficulty 3/5

Bond energy (kJ/mol) C-C C=C C≡C 347 614 839

The trend C-C < C=C < C≡C in bond energy implies:

  • A

    Higher bond order means longer, weaker bonds

  • B

    Higher bond order means shorter, stronger bonds

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  • C

    Bond order does not affect bond strength

  • D

    Triple bonds have only sigma overlap

Explanation

Multiple bonds bring atoms closer and concentrate more electron density between them, raising bond energy.

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