Question

What is the variable valency of chromate

Answer 1

Answer:

Chromate ion acts as reducing agents. 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-

Answer 2

ʜᴏʟᴀ ᴍᴀᴛᴇ !

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⭐ᴀɴsᴡᴇʀ⭐

In case of chromate the valency shown by the chromium is 2. Hence the formula of chromate ion is CrO42− and valency is 2.