1. PROPERTIES OF IONIC COMPOUNDS

2. FORM IONIC LATTICES Ex. NaCl one-to-one ratio Na:Cl = 1:1
Results: crystal lattice
Cubic Structure

3. FORM IONIC LATTICES Ionic bonds are strong
Require a lot of energy to break
Result: high MP’s and BP’s
Compound MP (oC) BP(oC)
NaI
KBr
CaCl >1600
NaCl
MgO

4. ATTRACTION BETWEEN IONS DECREASES AS DISTANCE BETWEEN THE IONS INCREASES
WHAT HAPPENS TO MP’s AS THE SIZE OF ONE OF THE IONS INCREASES? WHY?
Compound MP (oC)
KF 858
KCl 770
KBr 734
KCl 681