Vanadium, silver-white metal, element symbol is V and belongs to transition metal. The melting point of vanadium is 1890℃, the boiling point is 3380 degrees, and the density is 6.110 g/cm³. Together with niobium, tantalum, tungsten, and molybdenum, they are called refractory metals. It is malleable, hard and non-magnetic. It is not easy to oxidize in the air and is soluble in hydrofluoric acid, nitric acid and aqua regia. It is not easy to corrode and is also quite stable in alkali, sulfuric acid and hydrochloric acid. Vanadium is widely used in metallurgy, aerospace, chemical and battery industries in the form of ferrovanadium, vanadium compounds and metallic vanadium.
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