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Which of the following facts given is not
P correct?

W
(I) Bond length order: \( \mathrm{H}_{2}^{-}=\mathrm{H}_{2}^{+}\mathrm{H}_{2} \)
(II) \( \mathrm{O}_{2}^{+}, \mathrm{NO}, \mathrm{N}_{2}^{-} \)have same bond order of \( 2 \frac{1}{2} \)
(III) Bond order can assume any value including zero upto four
(IV) \( \mathrm{NO}_{3}^{-} \)and \( \mathrm{BO}_{3}^{-3} \) have same bond order for \( \mathrm{X} \) \( -\mathrm{O} \) bond (where \( \mathrm{X} \) is central atom)
(1) I, II \& III
(2) I \& IV
(3) II \& IV
(4) I \& II
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