Practice question
Question
Which species has a bond order of 0.5 and is paramagnetic?
Explanation
For H₂⁻ : (sigma 1s)² (sigma^* 1s)¹ . Bonding = 2, antibonding = 1. Bond order = (2 - 1/2) = 0.5 , with 1 unpaired electron (paramagnetic).
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