Honors Chemistry: Polyatomic Ion List

Vocabulary practice flashcards for the polyatomic ions, their chemical formulas, and their charges for Honors Chemistry.

Ammonium

A polyatomic cation with the formula $NH_4^+$ and a $+1$ charge.

Acetate

A polyatomic anion with the formula $C_2H_3O_2^-$ (or $CH_3COO^-$) and a $-1$ charge.

Bromate

A polyatomic anion with the formula $BrO_3^-$ and a $-1$ charge.

Chlorate

A polyatomic anion with the formula $ClO_3^-$ and a $-1$ charge.

Chlorite

A polyatomic anion with the formula $ClO_2^-$ and a $-1$ charge.

Cyanide

A polyatomic anion with the formula $CN^-$ and a $-1$ charge.

Hydrogen carbonate

A polyatomic anion with the formula $HCO_3^-$ and a $-1$ charge (also called bicarbonate).

Hydroxide

A polyatomic anion with the formula $OH^-$ and a $-1$ charge.

Hypochlorite

A polyatomic anion with the formula $ClO^-$ and a $-1$ charge.

Iodate

A polyatomic anion with the formula $IO_3^-$ and a $-1$ charge.

Nitrate

A polyatomic anion with the formula $NO_3^-$ and a $-1$ charge.

Nitrite

A polyatomic anion with the formula $NO_2^-$ and a $-1$ charge.

Permanganate

A polyatomic anion with the formula $MnO_4^-$ and a $-1$ charge.

Perchlorate

A polyatomic anion with the formula $ClO_4^-$ and a $-1$ charge.

Thiocyanate

A polyatomic anion with the formula $SCN^-$ and a $-1$ charge.

Carbonate

A polyatomic anion with the formula $CO_3^{-2}$ and a $-2$ charge.

Chromate

A polyatomic anion with the formula $CrO_4^{-2}$ and a $-2$ charge.

Dichromate

A polyatomic anion with the formula $Cr_2O_7^{-2}$ and a $-2$ charge.

Oxalate

A polyatomic anion with the formula $C_2O_4^{-2}$ and a $-2$ charge.

Peroxide

A polyatomic anion with the formula $O_2^{-2}$ and a $-2$ charge.

Sulfate

A polyatomic anion with the formula $SO_4^{-2}$ and a $-2$ charge.

Sulfite

A polyatomic anion with the formula $SO_3^{-2}$ and a $-2$ charge.

Phosphate

A polyatomic anion with the formula $PO_4^{-3}$ and a $-3$ charge.

Phosphite

A polyatomic anion with the formula $PO_3^{-3}$ and a $-3$ charge.

Arsenate

A polyatomic anion with the formula $AsO_4^{-3}$ and a $-3$ charge.