See image — AITS & Test Series Chemistry Question

💡 Solution & Explanation

I.  Bond length order is 2 2 2 H H H     II. Isoelectronic species, so identical bond order. III.  Fact. IV      3 3 NO Resonance , BO no resonance   . AITS-PT-I-PCM(Sol.)-JEE(Main)/2023 FIITJEE Ltd., FIITJEE House, 29-A, Kalu Sarai, Sarvapriya Vihar, New Delhi -110016, Ph 46106000, 26569493, Fax 26513942 website: www.fiitjee.com 12