Niobium
Niobium is a chemical element that has the symbol Nb and atomic number 41. A rare, soft, gray, ductile transition metal, niobium is found in pyrochlore and columbite. It was first discovered in the latter mineral and so was initially named columbium; now that mineral is also called "niobite". Niobium is used in special steel alloys as well as in welding, nuclear industries, electronics, optics and jewelry.
| General | |
|---|---|
| Atomic number: | 41 |
| Symbol: | Nb |
| Atomic weight: | 92.906 |
| Boiling Point (C): | 3300 |
| Melting Point (C): | 2468 |
| Density: | 8.4 |
| heatVapor: | -- |
| heatFusion: | 6.4 |
| Electrical Conductivity: | 0.08 |
| Thermal Conductivity: | .125 |
| Specific Heat Capacity: | 0.065 |
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