Question 1 (ii)Write down the formulae of:(ii) Aluminium chloride
(ii) Aluminium chloride: Symbol: Al Cl ↘↙ Valency: 3 1Criss crossing the valencies we get the formula as AlCl3.
Write down the formulae of
(i) Sodium oxide
(ii) Aluminium chloride
(iii) Sodium sulphide [3 MARKS]
(i) sodium oxide
(ii) aluminium chloride
(iii) sodium sulphide
(iv) magnesium hydroxide
Question 12 Write the molecular formulae for the following compounds
(a) Copper (II) bromide (b) Aluminium (III) nitrate (c) Calcium (II) phosphate (d) Iron (III) sulphide (e) Mercury (II) chloride (f) Magnesium (II) acetate