Which of following has minimum bond length ?

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4.Chemical Bonding and Molecular Structure

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Which of the following has the minimum bond length ?

A

$O_2^+$

B

$O_2^-$

C

$O_2^{2-}$

D

$O_2$

(AIPMT-2011)

Solution

Bond order of $O_{2}^{+}=\frac{10-5}{2}=2.5$

Bond order of $O_{2}=\frac{10-7}{2}=1.5$

Bond order of $O_{2}^{2-}=\frac{10-8}{2}=1$

Bond order of $O_{2}=\frac{10-6}{2}=2$

Maximum bond order $=$ minimum bond length.

Bond length is minimum for $O_{2}^{+}$

Standard 11

Chemistry

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