Nomenclature and Polyatomic Ions Review

Vocabulary flashcards covering polyatomic ion names, chemical formulas, charges, and group ion trends from the lecture notes.

Ammonium

A polyatomic cation with the formula $NH_4^+$.

Thiocyanate

A polyatomic anion with the formula $SCN^-$.

Cyanide

A polyatomic anion with the formula $CN^-$.

Peroxide

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

Hydroxide

A polyatomic anion with the formula $OH^-$.

Acetate

A polyatomic anion with the formula $C_2H_3O_2^-$ (also written as $CH_3COO^-$).

Permanganate

A polyatomic anion with the formula $MnO_4^-$.

Oxalate

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

Chromate

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

Dichromate

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

Mercury (I)

A polyatomic cation with the formula $Hg_2^{2+}$.

Nitrate

A polyatomic anion with the formula $NO_3^-$.

Nitrite

A polyatomic anion with the formula $NO_2^-$.

Sulfate

A polyatomic anion with the formula $SO_4^{2-}$ (also spelled sulphate).

Sulfite

A polyatomic anion with the formula $SO_3^{2-}$ (also spelled sulphite).

Hydrogen sulfate

A polyatomic anion with the formula $HSO_4^-$.

Hydrogen sulfite

A polyatomic anion with the formula $HSO_3^-$.

Phosphate

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

Phosphite

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

Hydrogen phosphate

A polyatomic anion with the formula $HPO_4^{2-}$.

Hydrogen phosphite

A polyatomic anion with the formula $HPO_3^{2-}$.

Dihydrogen phosphate

A polyatomic anion with the formula $H_2PO_4^-$.

Dihydrogen phosphite

A polyatomic anion with the formula $H_2PO_3^-$.

Carbonate

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

Hydrogen carbonate

A polyatomic anion with the formula $HCO_3^-$ (also known as bicarbonate).

Perchlorate

A polyatomic anion with the formula $ClO_4^-$.

Chlorate

A polyatomic anion with the formula $ClO_3^-$.

Chlorite

A polyatomic anion with the formula $ClO_2^-$.

Hypochlorite

A polyatomic anion with the formula $ClO^-$.

Group 1A atoms

Atoms that generally form $+1$ cations.

Group 2A elements

Elements that form $+2$ cations.

Group 7 atoms

Atoms that generally form $-1$ anions.

Group 6A elements

Elements that often form $-2$ anions.

Required Elements to Know by Heart

The first 36 elements as well as Sr, Ag, Cd, Sn, Te, I, Xe, Cs, Ba, Au, Hg, and Pb.