Question

What are the oxidation state of vanadium in the ions VO²⁺ and VO₄³⁻

Answer 1

Let oxidation state of V be x

In VO2+

`\\ \sf\longmapsto x-2=2`

`\\ \sf\longmapsto x=2+2`

`\\ \sf\longmapsto x=+4`

In VO_4^3-

`\\ \sf\longmapsto x+2(-4)=-3`

`\\ \sf\longmapsto x-8=-3`

`\\ \sf\longmapsto x=-3+8`

`\\ \sf\longmapsto x=+5`