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Atomic mass, symbol and atomic number
bismuth is a naturally occurring element with the element symbol Bi and the atomic number 83. In the periodic table it stands with an atomic mass of 208,980 u in the 5th main group. The chemical element discovered by Claude Geoffroy in 1753 is not radioactive and is in a solid state of aggregation at room temperature.
Profile: bismuth (bismuth)
| General | |
|---|---|
| Chemical element: | bismuth |
| Symbol: | Bi |
| Atomic number: | 83 |
| Group: | nitrogen group |
| Period: | 6 |
| Block: | p-block |
| Series: | metals |
| Appearance: | yellowish-silver |
| explorers: | Claude François Geoffroy |
| Year of discovery: | 1753 |
| Atomic properties | |
| Atomic mass: | 208,980 u |
| Atomic radius: | 160 pm |
| Covalent radius: | 148 pm |
| Van der Waals radius: | 207 pm |
| Electron configuration: | Xe 4f14 5d10 6s2 6p3 |
| ionization: | 703 kJ / mol |
| Physical Properties | |
| Physical state: | firmly |
| Density: | 9.78 g / cm3 |
| Crystal structure: | cubic |
| Magnetism: | diamagnetic |
| molar volume: | 21,31 · 10-6 m3/ mol |
| Mohs hardness: | 2,25 |
| Melting point: | 271 ° C |
| Boiling point: | 1560 ° C |
| Heat of fusion: | 10.9 kJ / mol |
| Heat of vaporization: | 179 kJ / mol |
| Thermal conductivity: | 8 W |
| Chemical properties | |
| electronegativity: | 2,02 |
Did you know that ...
- Bismuth was used in the Middle Ages as "antibiotics"?
- China by far the world's most widely funded bismuth?
- Bismuth 500 years ago was still called bismuth?
