Ionic bonding

Square box stuff Chemical ideas 3.1 page 34

Use simple dot cross diagrams to describe how atoms bond through ionic bonding. Learning outcomes

Compounds contain a metal and a non-metal Metals form + ions(and hydrogen) Non- metals form negative ions Ionic bonding

Electron configuration of metal ions Na (Z = 11) 2,8,1 S (Z= 16) 2,8,6 Na + 2,8 S 2- 2, 8 Do Q1 Page 40 a – e only

Conducts electricity when MOLTEN or in SOLUTION(aq) High melting point and boiling point hard solids Properties of Ionic compounds Form crystalline structures

Non directional bonds The strength of the bond equal in all directions Forces between the ions are very strong

NaCl is the formula unit GIANT LATTICE

Magnesium Fluoride

Now do question 3and 12 Page 40