Question

Which is stable O2 2+ or O2 2-, And Why ?

Answer 1

O2- is more stable than O2+...BeCAUSE.. in O2- OCTET OF oxygen is complete but in case of O2+ oxygen has incomplete octet...so O2+ IS LEAST STABLE..THAN O2-....

Answer 2

O2 2- is stable. Oxygen is an electronegative element which has six valence electron in its outermost shell. So to became stable or to complete it's octet oxygen gain two from other elements to form an anion.
Oxygen can rarely form O2 2+. Because oxygen requires high amount of energy to lose two more electron, which is highly unstable.

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