Ionic BondingNaming

Simple Ionic Compounds

KBr Name the metal first

– Potassium

Name the non-metal next, end it with –ide– Bromine becomes bromide

Put together: Potassium bromide

Practice

Na2O

Name the metal:

Sodium

Name the non-metal:

Oxide

Put them together to get: Sodium Oxide.

Name the following ionic compounds:

NaCl

Al2O3

BaF2

If you’re given the name, can you write the formula?– Strontium nitride– Strontium is Sr2+

– Nitride is N3-

– We must combine them to be equal to zero Need 3 Sr2+ to combine with 2 N3-

– Answer is Sr3N2

Classical Naming/Stock Naming

Stock Naming uses roman numerals to tell the charge of the ion. – Copper I ion – Copper II ion

Classical Naming uses the Latin root of the word and changes the ending to –ous (lower charge) or –ic (higher charge)– Cu+ Cuprous – Cu2+ Cupric

Practice naming

1. FeCl22. MnO

3. Fe2O3

4. TiO2

Polyatomic ions

Ions that are made of multiple atoms covalently bonded together.

We treat them like a unit or package When we need more than one, must be put in

brackets!! Normally end in –ite or -ate Example: sulfate, SO42-

Aluminum sulfate = Al2(SO4)3– Because is Al3+ and SO42- must combine to Zero

Practice

1. NaOH

2. K3PO4

3. CsMnO4

4. Ca(HCO3)2

5. Cu(NO3)2

1.Sodium hydroxide2.Potassium phosphate3.Cesium permanganate4.Calcium hydrogen carbonate5.Copper (II) nitrate