More stable among O2+ and O2-

More stable among O2+ and O2-

O2+ is more stable than O2-.
Reason: According to molecular orbital theory O2+ has 15 electrons &it has one electron in antibonding orbital.
molecular orbital diagram of O2+


Electronic configuration of O2+

In the case of O2- 17 electrons are present &3 electrons are present in antibonding orbitals. If number of electrons more in antibonding orbital the molecule become unstable.
molecular orbital diagram of O2-


Electronic configuration of O2-