IONS
Metals and Nonmetals in Group 1, 2, 3, 5, 6 and 7:
IONIC COMPOUNDS
EXAMPLE
What is the formula of aluminium sulphate?
Al is in group III
→ charge = 3+
→ Al3+
Ionic compounds are formed when there is electron transfer between metals and nonmetals
EXAMPLE
Draw the dot-and-cross diagram to show the formation of the compound CaO
IONIC BONDING
STRUCTURE OF IONIC COMPOUNDS
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