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Question

Chemistry Question on Molecular Orbital Theory

Which of the following options represents the correct bond order ?

A

O−2>O2<O2+{ O-_2 > O_2 < O_2^+}

B

O−2<O2>O2+{ O-_2 < O_2 > O_2^+}

C

O−2>O2>O2+{ O-_2 > O_2 > O_2^+}

D

O−2<O2<O2+{ O-_2 < O_2 < O_2^+}

Answer

O−2<O2<O2+{ O-_2 < O_2 < O_2^+}

Explanation

Solution

According to molecular orbital theory (MOT)
O2−O2O2+ No.  of  e−171615 Bond  order1.522.5\begin{matrix}&O^{-}_{2}&O_{2}&O^{+}_{2}\\\ No. \; of \; e^{-}&17&16&15\\\ Bond \;order&1.5&2& 2.5 \end{matrix}