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Groups in Modern Periodic Table

Y is a monova...

Question

Y is a monovalent metal.
Write the formula of its (a) sulphate (b) phosphate

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Solution

Valency of Y is +1 (since it is monovalent )
and valency of sulphate (SO₄²-) is = 2
Using the method of cross multiplication,

Y SO₄
1 2
Thus compound formed by Y and sulphate group would be : Y₂(SO₄)

Similarly valency of phosphate (PO₄^3-) is = 3
Using the method of cross multiplication,

Y PO₄
1 3
Thus compound formed by Y and phosphate group would be : Y₃(PO₄)

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Groups in Modern Periodic Table

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