a chromate ion consists of four oxygen atoms bonded to a chromium atom. it has two extra electrons. the…

a chromate ion consists of four oxygen atoms bonded to a chromium atom. it has two extra electrons. the formula of this ion: cr4o2− cro42+ cro42− done

a chromate ion consists of four oxygen atoms bonded to a chromium atom. it has two extra electrons. the formula of this ion: cr4o2− cro42+ cro42− done

Answer

Brief Explanations:

The chromate ion has one chromium atom bonded to four oxygen atoms. With two extra electrons, it has a - 2 charge. So the correct formula is $CrO_{4}^{2 - }$.

Answer:

CrO₄²⁻