Write the molecular formulae for the following compounds
(a) Copper (II) bromide
Ans. CuBr2
(b) Aluminium (III) nitrate
Ans. Al(NO3)3
(c) Calcium (II) phosphate
Ans. Ca3(PO4)2
(d) Iron (III) sulphide
Ans. Fe2S3
(e) Mercury (II) chloride
Ans. HgCl2
(f) Magesium (II) acetate
Ans. Mg(CH3COO)2
