JSS 2: WRITING CHEMICAL FORMULA(III); COMPOUNDS OF SO₄ and NO₃

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                                 SO₄ 
SO₄ is called Sulphate or Tetraoxosulphate(VI). Sulphate compounds contain the sulphate ion (SO₄²⁻). It has a valency of 2.
Write the chemical formula of the following compounds:

1. Sodium sulphate
(Valency: Na=1, SO₄=2)

2. Potassium sulphate
(Valency: K=1, SO₄=2)

3. Calcium sulphate
(Valency: Ca=1, SO₄=2)

5. Copper(II) sulphate
(Valency: Cu=2, SO₄=2)

6. Magnesium sulphate
(Valency: Mg=2, SO₄=2)

7. Zinc sulphate
(Valency: Zn=2, SO₄=2)

8. Iron(II) sulphate
(Valency: Fe=2, SO₄=2)

10. Ammonium sulphate
(Valency: NH₄=1, SO₄=2)

11. Barium sulphate
(Valency: Ba=1, SO₄=2)

12. Aluminium sulphate
(Valency: Al=3, SO₄=2)

                                    NO₃
NO₃ is called Nitrate or Trioxonitrate(V). Nitrate compounds contain the nitrate ion (NO₃⁻). It has a valency of 1. 

Write the chemical formula of the following compounds.

1. Sodium nitrate
 (Valency: Na=1, NO₃=1)

2. Potassium nitrate
 (Valency: K=1, NO₃=1)

3. Calcium nitrate
 (Valency: Ca=2, NO₃=1)

4. Ammonium nitrate
 (Valency: NH₄=1, NO₃=1)

5. Silver nitrate
 (Valency: Ag=1, NO₃=1)

6. Copper(II) nitrate
 (Valency: Cu=2, NO₃=1)

7. Lead(II) nitrate
 (Valency: Pb=2, NO₃=1)

8. Magnesium nitrate
 (Valency: Mg=2, NO₃=1)

9. Zinc nitrate
 (Valency: Zn=2, NO₃=1)

10. Aluminium nitrate
 (Valency: Al=3, NO₃=1)


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