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N2 and O2 are converted into monoanions ...

`N_2` and `O_2` are converted into monoanions `N_2^-` and `O_2^-` respectively. Which of the following statements in wrong ?

A

In `O_2`, bond length increases

B

In `O_2` , the O - O bond order increases

C

In `N_2`, the N - N bond weakens

D

`N_2^(-)` becomes paramagnetic

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The correct Answer is:
B
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