Question

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Write the Formula of the Following by criss-cross method
1. Sodium hydrogen carbonate
2. Ferrous sulphate
3. Aluminium nitride
4. Potassium sulphate
5. Ammonium chloride
6. Lead nitrate
7. Ammonium phosphate
8. Cupric oxide
9. Calcium hydrogen sulphate
10. Zinc hydroxide

Answer 1

1. Valency of sodium- 1+
valency of HCO3- 1-

formula- NaHCO3

2. Valency of Fe- 2+
valency of SO4- 2-

formula- FeSO4

3. valency of Al- 3+
valency of N- 3-

formula- AlN

4. valency of K- 1+
valency of SO4- 2-

formula- K2SO4

5. valency of NH4- 1+
valency of CI- 1-

formula- NH4Cl

6. valency of Pb- 2+
valency of NO3- 1-

formula-Pb(NO3)2

7. valency of NH4- 1+
valency of PO4- 3-

formula- (NH4)3PO4

8. valency of Cu- 2+
valency of O- 2-

formula- CuO

9. valency of Ca- 2+
valency of OH- 1-

formula-Ca(OH)2

10. valency of Zn- 2+
valency of OH- 1-

formula- Zn(OH)2

Answer 2

Answer:

hii dii

Explanation:

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