These include toxic cyanide ion, CN – , common hydroxide ion, OH – , and peroxide ion, O 2 2 – . Other important anions include acetate ion (C 2 H 3 O 2 – ), which is in vinegar, the chlorate ion (ClO...These include toxic cyanide ion, CN – , common hydroxide ion, OH – , and peroxide ion, O 2 2 – . Other important anions include acetate ion (C 2 H 3 O 2 – ), which is in vinegar, the chlorate ion (ClO 3 – ), the perchlorate ion (ClO 4 – ) which is often explosive, the nitrate ion (NO 3 – ), the carbonate ion (CO 3 2 – ) found in shells, the sulfate ion (SO 4 2 – ), and the phosphate ion (PO 4 3 – ).
