-1 Polyatomic ions

bromate

BrO3 -

acetate

C2H3O2 -, or CH3COO -

cyanide

CN -

hypochlorite

ClO -

chlorite

ClO2 -

chlorate

ClO3 -

perchlorate

ClO4 -

hydrogen carbonate (also called bicarbonate)

HCO3 -

iodate

IO3 -

permanganate

MnO4 -

nitrite

NO2 -

nitrate

NO3 -

hydroxide

OH -

thiocyanate

SCN -