Common Polyatomic Ions

Vocabulary flashcards mapping names of common polyatomic ions to their chemical formulas.

Oxalate

The polyatomic ion with the formula $C_2O_4^{2-}$

Hydrogen oxalate

The polyatomic ion with the formula $HC_2O_4^-$

Hydrogen sulfide

The polyatomic ion with the formula $HS^-$

Dichromate

The polyatomic ion with the formula $Cr_2O_7^{2-}$

Chromate

The polyatomic ion with the formula $CrO_4^{2-}$

Hydrogen carbonate/bicarbonate

The polyatomic ion with the formula $HCO_3^-$

Carbonate

The polyatomic ion with the formula $CO_3^{2-}$

Plumbite

The polyatomic ion with the formula $PbO_2^{2-}$

Molybdate

The polyatomic ion with the formula $MoO_4^{2-}$

Permanganate

The polyatomic ion with the formula $MnO_4^-$

Cyanide

The polyatomic ion with the formula $CN^-$

Borate

The polyatomic ion with the formula $BO_3^{3-}$

Arsenate

The polyatomic ion with the formula $AsO_4^{3-}$

Hydroxide

The polyatomic ion with the formula $OH^-$

Thiosulfate

The polyatomic ion with the formula $S_2O_3^{2-}$

Thiocyanate

The polyatomic ion with the formula $SCN^-$

Pyrophosphate

The polyatomic ion with the formula $P_2O_7^{4-}$

Hydronium

The polyatomic ion with the formula $H_3O^+$

Ammonium

The polyatomic ion with the formula $NH_4^+$

Nitrite

The polyatomic ion with the formula $NO_2^-$

Nitrate

The polyatomic ion with the formula $NO_3^-$

Sulfite

The polyatomic ion with the formula $SO_3^{2-}$

Sulfate

The polyatomic ion with the formula $SO_4^{2-}$

Hydrogen sulfite/bisulfite

The polyatomic ion with the formula $HSO_3^-$

Phosphite

The polyatomic ion with the formula $PO_3^{3-}$

Phosphate

The polyatomic ion with the formula $PO_4^{3-}$

Hydrogen phosphate

The polyatomic ion with the formula $HPO_4^{2-}$

Dihydrogen phosphate

The polyatomic ion with the formula $H_2PO_4^-$