Multiple choice According to the molecular orbital theory, bond order for H2+ species is 0.5 1.0 1.5 2.0 Reveal answer Fill a bubble to check yourself A Correct answer Explanation He2+: σ1s2 σ*2s1 Bond order = 1/2 (Nb - Na) = 1/2 (2 - 1) = 0.5 Thus, according to molecular orbital theory, the bond order for H2+ species is 0.5.