Give reason why H2+ ions are more stable than H2- though they have the samebond order - Chemistry - Chemical Bonding and Molecular Structure

Question

Give reason why H2+ ions are more stable than H2- though they
have the samebond order

Kumar Sarang · Accepted Answer

${H_{2}}^{+} = σ 1 s^{2} σ^{*} 1 s^{1} {H_{2}}^{-} = σ 1 s^{2} σ^{*} 1 s^{2} σ 2 s^{1}$

Bond order of ${H_{2}}^{+}$ =2-1/2 =0.5

Bond order of ${H_{2}}^{-}$ =3-2/2=0.5

But in case of ${H_{2}}^{+}$ there is only one electron in antibonding orbital while there are two electrons in case of ${H_{2}}^{-}$ . Thus ${H_{2}}^{-}$ is less stable .

Give reason why H2+ ions are more stable than H2- though they have the samebond order.