The corresponding group consists of nitrogen, vanadium and niobium; they are triatomic, paramagnetic, and negative.
The oxide of niobium dissolved in a bead of microcosmic salt gives a bluish colour in the reducing flame.
Chemically related to vanadium are the two elements tantalum and columbium or niobium.
niobium ni·o·bi·um (nī-ō'bē-əm)
A soft ductile metallic element that is used in steel alloys and superconductors. Atomic number 41; atomic weight 92.906; melting point 2,477°C; boiling point 4,744°C; specific gravity 8.57; valence 2, 3, 5.
A soft, silvery, ductile metallic element that usually occurs in nature together with the element tantalum. It is used to build nuclear reactors, to make steel alloys, and to allow magnets to conduct electricity with almost no resistance. Atomic number 41; atomic weight 92.906; melting point 2,468°C; boiling point 4,927°C; specific gravity 8.57; valence 2, 3, 5. See Periodic Table.