| Name | vanadium |
|---|---|
| Symbol | V |
| Atomic Weight | 50.9415 |
| Atomic Number | 23 |
| CAS ID | 7440-62-2 |
| Group Number | 5 |
| Group Name | (none) |
| Period Number | 4 |
| Origin of Name | Named after Vanadis, Scandinavian goddess. |
| Year Discovered | 1801 |
| Discovery Credits | Discovered by A. M. del Rio at Mexico City; rediscovered in 1831 by N. G. Selfstrom at Falun, Sweden. |
| Class | Metallic |
| Color | Silvery Gray Metallic |
| Standard State | Solid at 77 F & 298 K |
| Description | Shiny, silvery metal, soft when pure. Resists corrosion due to protective oxide film. Attacked by concentrated acids but not by fused alkalis. Used mainly as alloys and in steel. Diagnostic tests: With a borax bead test in the oxidizing flame, the bead is yellow when hot, changing to a yellowish green to almost colorless when cold. In a Na2(NH4)(PO4) bead under oxidizing conditions, vanadium is yellow to deep amber (hot) yielding slightly less color on cooling. In the reducing flame, it becomes a dirty green color (hot) and a fine green color when cold. |