Question

write the chemical formula of the following commands by Criss cross method a) alluminium chloride b) sodium nitrate c) potassium sulphate​

Answer 1

Answer:

Explanation:

a)aluminum's valency is 2

chloride's valency is 1

 Al        Cl

  2          1

when criss crossing

AlCl2

b)NaNO3

c)K2SO4