Question

Write the formula of (i) sodium oxide
(ii) Magnesium Hydroxide
(iii) Aluminium Chloride
(vi) Calcium chloride

Answer 1

Answer:

3. Alcl3

4. Cacl2

2.Mgoh

1.Nao

Answer 2

Answer:

(i) Nao

(ii ) Mg(OH)

(iii) AlCl3

(iv) CaCl2

Explanation:

You need to have a knowledge of valency of different elements to find their formula.