Question

I. State the valency and formulae of the following radicals or ions.
1. Ammonium
2. Sulphate
3. Nitrate
4. Iodide

Answer 1

Answer:

1. Ammonium:

Valency- 1

Formula- NH4

2. Sulphate

Valency- 2

Formula- SO4

3. Nitrate

Valency- 1

Formula- NO3

4. Iodide

Valency- 1

Formula- I

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Answer 2

Answer:

1. Ammonium = NH₄⁺ (valency 1)
2. Sulphate = SO₄⁻² (valency 2)
3. Nitrate = NO₃⁻ (valency = 1)
4. Iodide = I⁻ (valency = 1)