Part 1: Understanding Ions

Remember: Metals usually lose electrons to form positive ions called cations. Non-metals usually gain electrons to form negative ions called anions.

Part 2: Valency and Ionic Charges

Use: Li⁺, Mg²⁺, Al³⁺, Cl⁻ and O²⁻.

a) Sodium loses ______ electron to form the ion ______.

b) Chlorine gains ______ electron to form the ion ______.

c) Aluminium loses ______ electrons to form the ion ______.

Part 3: Applying Ionic Charges

a) Sodium ion (Na⁺) and chloride ion (Cl⁻): __________

b) Magnesium ion (Mg²⁺) and oxide ion (O²⁻): __________

c) Aluminium ion (Al³⁺) and chloride ion (Cl⁻): __________