Is vanadium a cation or an anion?

Common Cations and Anions. Name. Formula Charge. Name. Formula Charge. Name ... vanadium (II). V 2+. +2 oxalate. C2O4. 2–. –2 hydronium. {See note}. H3O +. +1 vanadium (III). V 3+. +3 oxide. O 2–. –2 iron (II). (ferrous). Fe 2+. +2 vanadium (IV). V 4+. +4 permanganate. MnO4. –. –1 iron (III). (ferric). Fe 3+. +3 zinc. read more

At first sight it depends on its partner. If vanadium bounds with an element which has a higher electronegativity, such as oxygen, every halide, and most nonmetals, it is cation. read more

In the vanadium redox battery (VRB), each half-cell is composed of a vanadium redox couple. At the anode VO2+ ions are converted to VO2+ ions and when electrons are removed from the positive terminal of the battery. read more