41 Nb 92.906
Niobium
transition metal
Properties
- Atomic number
- 41
- Atomic mass
- 92.906 u
- Category
- transition metal
- Group
- 5
- Period
- 5
- Block
- d-block
- State (room temp)
- Solid
- Outer-shell electrons
- 1
- Electronegativity
- 1.6 (Pauling)
- Density
- 8.57 g/cm³
- Melting point
- 2476.85 °C
- Boiling point
- 4743.85 °C
Electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹ 4d⁴
Noble-gas shorthand: [Kr] 4d⁴ 5s¹
Electrons per shell: 2, 8, 18, 12, 1 — that's 1 in the outermost shell.
About Niobium
Niobium, formerly columbium, is a chemical element with symbol Nb (formerly Cb) and atomic number 41. It is a soft, grey, ductile transition metal, which is often found in the pyrochlore mineral, the main commercial source for niobium, and columbite. The name comes from Greek mythology:Niobe, daughter of Tantalus since it is so similar to tantalum.
- Discovered by Charles Hatchett
- Appearance: gray metallic, bluish when oxidized
Position in the periodic table
Data compiled from Wikipedia, PubChem, and IUPAC. Source.