Which of the following compounds is a peroxid | vedclass

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(B) peroxide contains the peroxide ion,$O_2^{2-}$,which features an $O-O$ single bond.In $BaO_2$,the oxidation state of $Ba$ is $+2$,so the $O_2$ unit

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$BaO_2$

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(B) peroxide contains the peroxide ion,$O_2^{2-}$,which features an $O-O$ single bond.In $BaO_2$,the oxidation state of $Ba$ is $+2$,so the $O_2$ unit must have a charge of $-2$,which corresponds to the peroxide ion $(O_2^{2-})$.$KO_2$ is a superoxide $(O_2^-)$.$MnO_2$ and $NO_2$ are dioxides where oxygen is in the $-2$ oxidation state.

Which of the following compounds is a peroxide?

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