Correct option is C
Aluminium sulphate is an ionic compound formed by the combination of aluminium ions (Al³⁺) and sulphate ions (SO₄²⁻). To balance the charges:
· Aluminium ion (Al³⁺) → Has a charge of +3.
· Sulphate ion (SO₄²⁻) → Has a charge of -2.
To achieve charge neutrality, the lowest common multiple of 3 and 2 is 6, so:
· 2 Aluminium ions (2 × +3 = +6)
· 3 Sulphate ions (3 × -2 = -6)
