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Byju's Answer
Standard IX
Chemistry
Variable Valency
an element M ...
Question
an element M burnes in oxygen to form its oxide having the formula M2O3.find valency of the element.write the formulae of its sulphate and bromine
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Solution
Valency of M = 3
Valency of O = 2
Formula for sulphate is M
2
(SO
4
)
3
.
Formula for bromide is MBr
3
ā
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Q.
(a) Write the symbols/formulae of two simple ions and two compound ions (or polyatomic ions).
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