Multiple choice Which of the following has zero bond order? N2 O2 F2 Ne2 Reveal answer Fill a bubble to check yourself D Correct answer Explanation Bond order = (Nb-Na)/2 Where, Nb = number of electrons in bonding orbitals Na = number of electrons in antibonding orbitals Ne2 has equal number of bonding and antibonding electrons. Hence, bond order of Ne2 is zero.