Which of the following facts given is not correct ? (I) Bond length order : H2^- = H2^+ > H2 (II) O2 — Chemical Bonding Chemistry Question

Question

Which of the following facts given is not correct ? (I) Bond length order : H2^- = H2^+ > H2 (II) O2^+, NO, N2^- have same bond order of 2 1/2 (III) Bond order can assume any value including zero upto four (IV) NO3^- and BO3^3- have same bond order for X — O bond (where X is central atom)