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Byju's Answer
Standard XII
Chemistry
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 X
2
(SO
4
)
3
.
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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