1. Tardigrade
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  3. Chemistry
  4. Which of the following species is least stable ?

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Q. Which of the following species is least stable ?

States of Matter

Solution:

Bond order $\propto$ stability
BO of $O_2$ = 2 , BO of $O^-_2 = 1.5$
BO of $O_2 \,{}^+$ = 2.5 , BO of $O_2\,{}^{2-}$ = 1