A) \[{{O}_{2}}\]
B) \[O_{2}^{-}\]
C) \[O_{2}^{2-}\]
D) \[O_{2}^{+}\]
Correct Answer: D
Solution :
\[Bond\text{ }length\propto \frac{1}{bond\,order}\]| Species | Bond order | Bond length (pm) |
| \[{{O}_{2}}\] | 2 | 121 |
| \[O_{2}^{+}\] | 2.5 | 112 |
| \[O_{2}^{-}\] | 1.5 | 125 |
| \[O_{2}^{2-}\] | 1.0 | 149 |
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