Choose the compound which does not possess a peroxide group

Options

A. `Na_(2)O_(2)`
B. `CrO_(5)`
C. `Fe_(2)O_(3)`
D. `BaO_(2)`

Answer

C

Explanation

`Na_(2)O_(2)` is `Na^(+).^(-)O-O^(-) Na^(+), CrO_(5)` is

`BaO_(2)` is `Ba^(2+) (.^(-)O-O^(-))` while `Fe_(2)O_(3)` consists of only `Fe^(3+)` and `O^(2-)` ions. Thus, `Fe_(2)O_(3)` does not contain a peroxide `[.^(-)O-O^(-)]` linkage.