Question

Compare the relative stability of the given species and indicate their magnetic properties: O₂, O₂⁺, O₂⁻

Answer 1

The determination of happening species can be determined on the evidence of bond line as given below:

O2 has KK

so,Bond order =1/2(Nb-Na)

= 1/2(8-4)

= 2 = Paramagnetic

Same way, the electric contour of O2+ can be written as:

Bond order of  O2+  = 1/2(8-3)

= 2.5 = paramagnetic

Electronic configuration of O2- ion will be:

Bond order of = 1/2(8-5)

= 1.5 = paramagnetic

Electronic configuration of O22- ion will be:

Bond order of O22- =1/2(8-6) = 1  diamagnetic

The higher the bond order,noted is the stability

Therefore the stability decreases as O2+  > O2 > O2- > O22-.