Chemistry Polyatomic Ions

NH₄⁺

Ammonium

C₂H₃O₂-

Acetate

CO₃^2-

Carbonate

HCO₃^-

Hydrogen Carbonate

OH^-

Hydroxide

NO₃^-

Nitrate

SO₄^2-

Sulfate

PO₄^3-

Phosphate

Ionic: Metal & Nonmetal (forms one kind)

Cation + anion (replace ending with ide)

Ex: CaI2 = Calcium Iodide

Ionic Metal & Nonmetal (Transition Metal)

Name of cation + charge of cation, base name of anion (replace ending in ide)

Ex: FeCl3 = Iron (III) Chloride

Molecular (Nonmetal & Nonmetal)

Prefix & name of 1st element + prefix & base name of second element (replace ending with ide)

Example: P2O5 = diPhosphorus pentoxide

Acids (Hydrogen + one or more NONmetals)

Binary Acids Two-element

Hydro + name of NONmetal (ic ending) + acid

Example: HCl = hydrochloric acid

Acids (Hydrogen + Memorized Oxyacid Nonmetal)

Containing Oxygen + ends in Ate

Base name of oxyacid (replace ending with ic) + acid

Example: H3PO4 = Phosphoric Acid

Acids (Hydrogen + Memorized Oxyacid Nonmetal)

Containing Oxygen + ends in Ite

Base name of oxyanion (replace ending with -ous) + acid

Example: H2SO3 = Sulfurous acid