Niobium (Nb), element 41 – Learn Acer periodic table

Transition metal, atomic number 41.

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.

Symbol Nb. Atomic mass 92.906372 u. Group 5, period 5. Electron configuration [Kr] 4d4 5s1. Electrons per shell 2, 8, 18, 12, 1. State at room temperature: Solid. Melting point 2476.8 °C, boiling point 4743.9 °C. Discovered by Charles Hatchett.

Element data from Wikipedia, CC BY-SA 3.0.

Niobium (Nb), element 41 – Learn Acer periodic table

Niobium

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