Atomic Number
41
Niobium is a chemical element with symbol Nb and atomic number 41. It is a soft, grey, crystalline, ductile transition metal, often found in the minerals pyrochlore and columbite.
41
92.906 u
transition metal
solid
8.57 g/cm³
2, 8, 18, 12, 1
Protons: 41 • Electrons: 41 • Neutrons: Varies by isotope
Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s¹ 4d⁴
1801 • Charles Hatchett