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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....