Question

what is the valency of sulphate ion in Na2SO4​

Answer 1

In chemistry, the valence or valency of an element is a measure of its combining power with other atoms when it forms chemical compounds or molecules. SO4 is a radical with charge of -2. Therefore 2 sodium (Na) atoms combine with SO4 radical to make compund Na2SO4. Hende the valancy of each sodium (Na) atom is 1 and of sulphate ion is 2.

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Answer 2

Answer: 2

Explanation:

The valency of SO4 in the compound Na2SO2 is 2.

This is because we know that the valency of Na is 1 and in the formula we see its Na2 which implies that the valency of SO4 in the compound is 2.

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