Question

what is the valency of CrO4
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Answer 1

Answer:

Formula of Chromate is CrO4 ^-2

Valency of chromate is 2

NOTE:-We should not keep any sign(+ or -) for valency

4.4

Explanation:

Chromate is an ion which is present in the chromium salt. When the element chromium has an oxidation state as 6+, it produces chromate ions as oxoanions.

Chromate ion acts as reducing agents.

Its chemical formula is .

Valency refers to the number of electrons gained, lost or shared to make the outermost shell fill with 8 electrons.

In the case of chromate ion, it bonds by gaining 2 electron, thus its valency is 2-.

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Answer 2

Answer:

the valency of Cr04 is -2 gains 2 electrons to attain stability

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