give the formulae of the compounds formed by:
(a) sodium and sulphate ions
(b) magnesium and hydroxide ions
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Solution
Dear student
(a) sodium and sulphate ions : , Na+ and SO42- ions form , Sodium sulphate: Na2SO4
ā(b) magnesium and hydroxide ions , Mg2+ and OH- ions form Magnesium hydroxide ,Mg(OH)2