Decreasing order of stability of O2, O-2, O2+ and O22- is :

Question

Decreasing order of stability of O2, O-2, O2+ and O22- is : (A) O2 > O2+ > O22- > O2-  (B) O-2 > O22- > O2+ > O2  (C) O2+ > O2 > O2- > O22-  (D) O22- > O2- > O2 > O2+

Tardigrade Admin · Accepted Answer

Given species: O2, O2-1 , O2+1 , O22- Total number of electrons O2 -> 16e- O2-1 -> 17e- O2+1 -> 15e- O22- -> 18 e-

Q. Decreasing order of stability of $O_{2}, O_{2}^{-}, O_{2}^{+}$ and $O_{2}^{2 -}$ is :

$O_{2} > O_{2}^{+} > O_{2}^{2 -} > O_{2}^{-}$

$O_{2}^{-} > O_{2}^{2 -} > O_{2}^{+} > O_{2}$

$O_{2}^{+} > O_{2} > O_{2}^{-} > O_{2}^{2 -}$

$O_{2}^{2 -} > O_{2}^{-} > O_{2} > O_{2}^{+}$

Given species : $O_{2}, O_{2}^{- 1}, O_{2}^{+ 1}, O_{2}^{2 -}$
Total number of electrons
$O_{2} - > 16 e^{-}$
$O_{2}^{- 1} - > 17 e^{-}$
$O_{2}^{+ 1} - > 15 e^{-}$
$O_{2}^{2 -} - > 18 e^{-}$

Q. Decreasing order of stability of O2​,O2−​,O2+​ and O22−​ is :

O2​>O2+​>O22−​>O2−​

O2−​>O22−​>O2+​>O2​

O2+​>O2​>O2−​>O22−​

O22−​>O2−​>O2​>O2+​