Iron (III) peroxide, also called ferric peroxide, #"Fe"_2"(O"_2")"_3"# is formed by ionic bonding between the iron (III) cations and peroxide anions.
Explanation:
#"Fe"_2"(O"_2)_3"# is the ionic compound iron (III) peroxide (also called ferric peroxide). It is composed of iron (III) cations ionically bonded to peroxide anions in a ratio of #"2[Fe]"^(3+):##"3[O"_2]""^(2-)"#.