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Vanadium Boride, VB

Vanadium Boride, VB, is prepared by fusing a mixture of the elements in vacuo at the temperature of the electric furnace. It is a hard, metallic substance, which is attacked by nitric acid, hydrofluoric acid, and fused alkali.

A vanadium borate of uncertain composition is obtained by fusing a mixture of vanadium pentoxide and boric anhydride. It forms green or yellowish-green crystals which, however, undergo hydrolysis readily. A vanadyl borate is also obtained by the action of borax on vanadyl sulphate solution, and a complex vanadium borotungstate has been prepared.

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