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Empirical & Molecular Formula

An element X ...

Question

An element X has valency 3. Write its chemical formula with sulphate ions

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Solution

The valency of sulpahte ions is 2, hence the formula formed by the combination of X and sulphate ions would be X₂(SO₄)₃.

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Similar questions

Q. (a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
(b) An element Y has a valency of 4. Write the formula for its :
(i) chloride
(ii) oxide
(iii) sulphate
(iv) carbonate
(v) nitrate

^{'} X^{'}

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. Write its formula for carbonate?

^{'} X^{'}

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. Write its formula for Nitrate.

Q. An element X has a valency 3. Write the formula of its oxide?

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