MCQ
Which of the following has the minimum bond length ?
  • A
    $O_2^+$
  • B
    $O_2^-$
  • $O_2^{2-}$
  • D
    $O_2$

Answer

Correct option: C.
$O_2^{2-}$
c
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 $O_{2}^{+}$

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