Question

Write the chemical formula of:
(a) Sodium oxide
(b) calcium chloride
(c) aluminium oxide

(d) magnesium hydroxide
(e) sodium carbonate​

Answer 1

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(a) Sodium oxide : Na2O

(b) Calcium chloride : CaCl2

(c) Aluminium oxide : Al2O3

(d) Magnesium hydroxide : Mg(OH)2

(e) Sodium carbonate : Na2CO3

Answer 2

(a) Sodium oxide = Na2O

(b) calcium chloride = CaCl2

(c) aluminium oxide = Al₂O₃

(d) magnesium hydroxide = MgO

(e) sodium carbonate = Na₂CO₃

Hope it's helps