Question

Write the formulae of the following compounds, showing the steps involved. a:Sodium Oxide, b:Sodium Chloride, c: Calcium Oxide, d: Ammonium chloride, e:Aluminium Chloride, f: Magnesium Sulphate​

Answer 1

Answer:

Explanation:

1.Na2o

2.Nacl

3.cao

4.Nh4cl

5.Alcl3

6.Mgso4

Answer 2

Answer:

Formula of following compounds

a) Sodium oxide

valency of sodium = 1

valency of oxide= 2

Na. o3

1 2

Cross multiplication

Na2 o3

b) Sodium chloride

valency of sodium = 1

valency of chloride = 1

Na. Cl

1 1

cross multiplication

Nacl

c) Formula of calcium oxide

valency of calcium = 2

valency of oxide = 3

ca. o3

2 2

cross multiplication

Ca2o3(2) or Cao

d) Fomrula of Ammonium chloride

valency of Ammonium = 1

valency of chloride = 1

Nh4 cl

1. 1

cross multiplication

Nh4Cl

e) Formula of aluminium chloride

valency of al= 3

valency of cl = 1

al. cl

3 1

cross multiplication

Alcl3

f) Formula of Magnesium sulphate

valency of Mg = 2

valency of so4 = 2

Mg. ( so4 )-2

2. 2

cross multiplication

Mgso4