Naming Compounds

Naming Ionic Compounds

Ionic compounds contain a metal and a nonmetal

Name the metal first, then the nonmetal as -ideExamples:

NaCl sodium chlorideZnI2 zinc iodide

Al2O3 aluminum oxide

What are the names of the following compounds?

Na3Nsodium nitride

KBrpotassium bromide

Al2O3

aluminum oxide

MgSmagnesium sulfide

Transition Metals

Most form more than one positive ions with these charges:

1+ 2+ 1+ or 2+ 2+ or 3+

Ag+ Cd2+ Cu+, Cu2+ Fe2+, Fe3+

silver cadmium copper(I) ion iron(II) ion ion ion copper (II) ion iron(III) ion

Names of cations with more than one charge…

Use a Roman number after the name of a metal that forms two or more ions

Transition metals and the metals in groups 4A and 5A

FeCl3 (Fe3+) iron (III) chloride

CuCl (Cu+ ) copper (I) chlorideSnF4 (Sn4+) tin (IV) fluoride

PbCl2 (Pb2+) lead (II) chloride

Fe2S3 (Fe3+) iron (III) sulfide

Name the following compounds:

CaOcalcium oxide

SnCl4

tin(IV) chloride

Co2O3

cobalt (III) oxide

Complete the names of the followingcompounds with variable metal ions:FeBr2

iron (II) bromide

Cu2Ocopper (I) oxide

SnCl4

tin (IV) chloride

Fe2O3

iron (III) oxide

CuScopper (II) sulfide

Polyatomic IonsA group of atoms with an overall charge. Refer to

your handout…

NH4+ Ammonium

OH- Hydroxide

NO3- Nitrate

NO2- Nitrite

CO32- Carbonate

Naming Ternary CompoundsContain at least 3 elements

Name the nonmetals as a polyatomic ion

Examples:

NaNO3 Sodium nitrate

K2SO4 Potassium sulfate

Identify the correct names:

Na2CO3

sodium carbonate

MgSO3

magnesium sulfite

MgSO4

magnesium sulfate

Ca(HCO3)2

calcium bicarbonate

CaCO3

calcium carbonate

Ca3(PO4)2

calcium phosphate

Naming Covalent Compounds

Two nonmetalsEnd the last element in -ideAdd prefixes to show more than 1 atom

Prefixes:mon- 1 penta- 5di- 2 hexa- 6tri- 3tetra- 4

CO carbon monoxide

CO2

carbon dioxide

PCl3

phosphorus trichloride

CCl4

carbon tetrachloride

N2Odinitrogen monoxide

Acids without the presence of oxygen, the name is

written as:

Hydro(anion)ic acid

Hydrosulfuric acid – H2SHydrobromic acid - HBrHydrocyanic acid – HCN

If the acids do contain oxygen, the method of naming them changes. If

the anion ends in “-ate”, the suffix that is added to

the chemical name is “-ic”.

Nitric acid HNO3

Sulfuric acid H2SO4

Phosphoric acid H3PO4

If the anion ends in “-ite”, the suffix is “-ous”

Nitrous acid HNO2

Sulfurous acid H2SO3