• # question_answer Give reason for the following: $H_{2}^{+}$ and $H_{2}^{-}$ ions have the same bond order but $H_{2}^{+}$ ions are more stable than $H_{2}^{-}$.

$H_{2}^{-}$ has one electron in the anti bonding $\sigma _{1s}^{*}$ molecular orbital due to which there is some destabilizing effect and hence is less stable than $H_{2}^{+}$ ion (which has no electron in the anti bonding orbital).