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  2. Vanadium(V) oxide - Wikipedia

    en.wikipedia.org/wiki/Vanadium(V)_oxide

    Vanadium(V) oxide (vanadia) is the inorganic compound with the formula V 2 O 5.Commonly known as vanadium pentoxide, it is a dark yellow solid, although when freshly precipitated from aqueous solution, its colour is deep orange.

  3. Vanadium compounds - Wikipedia

    en.wikipedia.org/wiki/Vanadium_compounds

    Vanadium compounds are compounds formed by the element vanadium (V). The chemistry of vanadium is noteworthy for the accessibility of the four adjacent oxidation states 2–5, whereas the chemistry of the other group 5 elements , niobium and tantalum , are somewhat more limited to the +5 oxidation state. [ 1 ]

  4. Vanadium oxide - Wikipedia

    en.wikipedia.org/wiki/Vanadium_oxide

    Called Magnéli phases for Arne Magnéli, [2] they are examples of crystallographic shear compounds based on the rutile structure. [1] Examples of Magnéli phases include V 4 O 7, V 5 O 9, V 6 O 11, V 7 O 13 and V 8 O 15. V 3 O 5 appears as the mineral oxyvanite. [3] Many vanadium-oxygen phases are non-stoichiometric. [2]

  5. Vanadium(IV) oxide - Wikipedia

    en.wikipedia.org/wiki/Vanadium(IV)_oxide

    Vanadium(IV) oxide or vanadium dioxide is an inorganic compound with the formula VO 2.It is a dark blue solid. Vanadium(IV) dioxide is amphoteric, dissolving in non-oxidising acids to give the blue vanadyl ion, [VO] 2+ and in alkali to give the brown [V 4 O 9] 2− ion, or at high pH [VO 4] 4−. [4]

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  9. Vanadium - Wikipedia

    en.wikipedia.org/wiki/Vanadium

    Vanadium(IV) compounds often exist as vanadyl derivatives, which contain the VO 2+ center. [23] Ammonium vanadate(V) (NH 4 VO 3) can be successively reduced with elemental zinc to obtain the different colors of vanadium in these four oxidation states. Lower oxidation states occur in compounds such as V(CO) 6, [V(CO) 6] − and substituted ...