Ionic Compounds

Compounds that are made up of charged atoms or ions. They usually consist of a metal and one or more nonmetals.

Types of Ionic Compounds

I. Binary

Ionic compounds which are composed of two elements, a metal & a nonmetal.

e.g.

Binary Ionic Compounds

a) Writing Names

MgF2

K3P

AlBr3

Charges on Metallic Ions

A A

3A

B

Charges on Nonmetallic Ions

5A 6A 7A

8A

b) Writing Formulas

sodium oxide

strontium nitride

calcium sulfide

Binary Ionic Compounds with Multivalent Metals

a) Writing Formulas

iron (III) chloride

gold (I) sulfide

lead (II) oxide

copper (I) nitride

b) Writing Names

SnO

NiBr2

AuP

II. Ternary

An ionic compound consisting of more than two elements.

e.g.

limestone, CaCO3

Polyatomic Ions

Ion Name

NO3 -1

CO3 -2

ClO3 -1

SO4 -2

HCO3 -1

OH -1

PO4 -3

NH4 +1

nitrate

bicarbonate

chlorate

hydroxide

sulfate

carbonate

phosphate

ammonium

a) Writing Names

Na2SO4

Ca3(PO4)2

Ba(ClO3)2

Fe(NO3)2

CuCO3

b) Writing Formulas

potassium phosphate

mercury (II) chlorate

lead (II) sulfate

aluminum carbonate