Write the formula of the following compounds.

(i) Magnesium sulphate

(ii) Sodium bromide

(iii) Calcium chloride

(iv) Potassium nitrate

(v) Sodium phosphate

i. Formula of magnesium sulphate:

Formula: MgSO₄

ii. Formula of sodium bromide:

Formula: NaBr

iii. The formula of calcium chloride:

Formula: CaCl₂

iv. Formula of potassium nitrate:

Formula: KNO₃

v. Formula of sodium phosphate:

Formula: Na₃PO₄