Chemistry

Problem

Which of the following facts given is not correct ? (I) Bond length order :

\text{H}_2^- = \text{H}_2^+ > \text{H}_2

(II)

\text{O}_2^+

\text{NO}

\text{N}_2^-

have same bond order of

2\frac{1}{2}

(III) Bond order can assume any value including zero upto four (IV)

\text{NO}_3^-

and

\text{BO}_3^-

have same bond order for

X - O

bond (where

X

is central atom) a. I, II & III b. I & IV c. II & IV d. I & II