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JEE · NEET Previous Year Question

$Using molecular orbital theory predict which of the following species has the shortest bond length ?$

Topic: JEE PYQ

Answer: D. Full step-by-step solution below.

A $O_{2}^{+}$
B $O_{2}^{-}$
C $O_{2}^{2 -}$
D $O_{2}^{2 +}$

Correct answer: D

Solution

(d) Bond Order (a) O2+ \frac{10 - 5}{2} = 2.5 (b) O2- \frac{10 - 7}{2} = 1.5 (c) O22- \frac{10 - 8}{2} = 1 (d) O22+ \frac{10 - 4}{2} = 3 Bond order \propto \frac{1}{b o n d l e n g t h}

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