Chemistry - Naming Compounds

Type I Ionic Compound

• Metal + Nonmetal

• Metal goes first, nonmetals second

• Nonmetals → add “-ide”

Type II Ionic Compounds

• Metal can form diff cations (aka transition metals)

• Indicate the charge of cation with roman numeral (ie: if +2 then write (II) )

• add “-ic” for higher charge, & “-ous” for lower charge

• (ie: Iron II → Ferric, Iron III → Ferrous)

Type III Covalent Compounds

• 1st element then 2nd element

• use prefix to indicate # of atoms (ie: mono, di, tri, tetra, penta, hexa, hepta and octa)

Compounds with Polyatomic Ions

• if combined with a nonmetal, use prefixes as usual

• if combined with a metal with diff cations, use roman numeral

• but LEAVE the polyatomic named as it is

Ammonium

Nitrite

Nitrate

Sulfite

Sulfate

Hydrogen Sulfate

Hydroxide

Cyanide

Phosphate

Carbonate

Hydrogen Carbonate

Acetate

Permanganate

Dichromate

Chromate

Peroxide

Hypochlorite

Chlorite

Chlorate

Perchlorate