Question

Write the chemical formula of compound using criss cross method. 1) Sodium sulphide 2) Magnesium oxide 3) Calcium hydroxide 4) Hydrogen chloride 5) Sulphuric acid 6) Iron (II) sulphide 7) Iron (III) sulphide 8) Nitric acid 9) Calcium phosphate 10) Aluminium sulphate 11) Magnesium nitride

Answer 1

1.Na2So2

2.MgO

3.CaOH2

4.HCl

5.H2SO4

6.FeSO2

7.Fe2SO3

8.HNO3

9. Ca3(PO4)2

10.Al2(SO4)3

11.Mg(NO3)2