The compound `(s)` which have `-O-O-` bonds `(s)` is`//`are

Options

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

Answer

A, B, C

Explanation

a and b. Both `BaO_(2)` (barium peroxide) and `Na_(2)O_(2)` (sodium peroxide) conatain `O_(2)^(-2)` (peroxide ion)
`BaO_(2) rarr Ba^(2+) + O_(2)^(2-)`
`Na_(2)O_(2) rarr 2Na^(o+) + O_(2)^(2-)`
c. `CrO_(5)` (chromium pentaoxide), a compound which have butterfly structure also have peroxide linkage as shown:

d. It is an oxide.