Why does bond length decrease as bond number increases? and YELP_BOND-35

Why does bond length decrease as bond number increases?

C - C bond energy: 346, bond length: 154
C=C bond energy: 612, bond length: 134


Bond best answer:

Answer by rpm92
as bond order (number) increases, the interaction between each nucleus and the associated electrons also increases, so they pull closer together.

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