Naming Inorganic Compounds

Positive ions (cations)

Cations formed from metal atoms have the same name as the metal.

Na+ sodium ion Zn2+ zinc ion

Naming Inorganic Compounds

Positive ions (cations)

If the metal can form ions with more than one charge, the charge is in ( ).

Co+ cobalt() Co2+ cobalt()

Naming Inorganic Compounds

metal names

Lower charge gets the ous Higher charge gets the ic

Fe2+ = Fe(II) = Ferrous FeCl2 = ferrous chlorideFe3+ = Fe(III) = Ferric FeCl3 = ferric chloride

Cu+ = Cu(I) = cuprous CuBr = cuprous bromide

Cu2+ = Cu(II) = cupric CuBr2 = cupric bromide

Hg+ = Hg(I) = Mercurous HgI = mercurous iodideHg2+ = Hg(II) = Mercuric HgI2 = mercuric iodide

Naming Inorganic Compounds

Positive ions (cations)

Follow the poly atomic ion list for others

Naming Inorganic Compounds

Negative ions (anions)

Monotomic anions – drop the ending of the name and add –ide.

H- hydride O2- oxide Br- bromide

Follow the polyatomic ion list for others.

Naming Inorganic Compounds

Ionic compounds

Name the cation followed by the anion

CaCl2 calcium chloride

Al2O3 aluminum oxide

Naming Inorganic Compounds

Binary molecular compounds (covalent compounds)

• The name of the element farthest to the left in the table is written first.

• If in the same group, the lower one is named first

• The second element is given the ide ending

• Greek prefixes are used to indicate the number of each atom.

Standard prefixes

1 mono 6 hexa

2 Di 7 hepta

3 tri 8 octa

4 tetra 9 nona

5 penta 10 deca

Naming Inorganic Compounds

Naming Acids

If the acid has no oxygen then simply add hydro as prefix and ic acid as

suffix

Naming Inorganic Compounds

Naming Acids

If the acid contains oxygen

use ic acid if the anion ends in ate

and

use ous acid if the anion ends in ite.

Naming Inorganic Compounds

Naming Acids

If the acid contains oxygen

If the acid has one less O than the ite ion then uses hypo….ous acid

If it has one more O than the ate ion then use per….ic acid.

Naming Inorganic Compounds

Naming Acids

ClO- hypochlorite ion HClO hypochlorous acid

ClO2- chlorite ion HClO2 chlorous acid

ClO3- chlorate ion HClO3 chloric acid

ClO4- Perchlorate ion HClO4 perchloroic acid

Naming inorganic

Compounds

AcidNot an

Acid

Ionic Compound

Covalent Compound

Name the first atom followd by the second with the ide ending.

Include the number of each

type of atom

The compound contains a transition

No transition metals present

Name first followed by the second with the

ide ending.Include the charge on the metal in ( )

or use ic, ous designation

Name the first followed by the second with the

ide ending

If a polyatomic ion is present

simply use the name of the

polyatomic ion

Contains Oxygen

No Oxygen present

Add hydro as prefix and ic acid

as suffix

Ion ends in ate - ic acidIon ends in ite - ous acid

One less O than the ite - hypo...ous acidOne more O than the ate - per...ic acid