V2SO4 refers to vanadium(IV) sulfate, a chemical compound composed of vanadium, sulfur, and oxygen. It typically appears as a dark-colored solid and is used in various industrial applications, including as a catalyst and in the production of vanadium metal and alloys. In the context of chemistry, it is important to handle vanadium compounds with care, as they can be toxic and environmentally hazardous.
vanadium(I) sulphate, but as far as I am aware, this compound is unknown
The element Vanadium number 23 on the periodic table has the symbol 'V'. See the link below for a list of properties