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Compare the relative stability of the fo...

Compare the relative stability of the following species and indicate their magnetic properties:
`O_(2)`,`O_(2)^(o+)`,`O_(2)^(ө)`(superoxide),`O_(2)^(-2)`(peroxoide).

Text Solution

Verified by Experts

The stability can be decided on the basis of bond order as :
`{:(O_(2):KK(sigma2s)^(2)(sigma2s^(**))^(2)(pi2p_(z))^(2)(pi2p_(x))^(2)(pi^(**)2p_(x))^(1)(pi^(**)2p_(y))^(1),"Bond order"=(8-4)/(2)=2,"Paramagnetic"),(O_(2)^(+):KK(sigma2s)^(2)(sigma2s^(**))^(2)(pi2p_(z))^(2)(pi2p_(x))^(2)(pi^(**)2p_(x))^(1),"Bond order"=(8-3)/(2)=2.5,"Paramagnetic"),(O_(2)^(-):KK(sigma2s)^(2)(sigma2s^(**))^(2)(pi2p_(z))^(2)(pi2p_(x))^(2)(pi^(**)2p_(x))^(1)(pi^(**)2p_(y))^(1),"Bond order"=(8-5)/(2)=1.5,"Paramagnetic"),(O_(2)^(2-):KK(sigma2s)^(2)(sigma2s^(**))^(2)(pi2p_(z))^(2)(pi2p_(x))^(2)(pi^(**)2p_(x))^(1)(pi^(**)2p_(y))^(2),"Bond order"=(8-6)/(2)=1,"Diamagnetic"):}`
Larger the bond order, greater is the stability. So the stability decreases as : `O_(2)^(+) gt O_(2) gt O_(2)^(-) gt O_(2)^(2-)`
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