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Atomic mass, symbol and atomic number
nickel is a naturally occurring element with the element symbol Ni and the atomic number 28. In the periodic table it stands with an atomic mass of 58.693 u in the 8th subgroup. The chemical element discovered by Frederic Cronstedt in 1751 is not radioactive and is in a solid state of aggregation at room temperature.
Profile: Nickel (nickel)
| General | |
|---|---|
| Chemical element: | nickel |
| Symbol: | Ni |
| Atomic number: | 28 |
| Group: | nickel group |
| Period: | 4 |
| Block: | d-block |
| Series: | Transition metals |
| Appearance: | silver, metallic |
| explorers: | Axel Frederic Cronstedt |
| Year of discovery: | 1751 |
| Atomic properties | |
| Atomic mass: | 58.693 u |
| Atomic radius: | 135 pm |
| Covalent radius: | 124 pm |
| Van der Waals radius: | 163 pm |
| Electron configuration: | Ar 4s2 3d8 |
| ionization: | 737.1 kJ / mol |
| Physical Properties | |
| Physical state: | firmly |
| Density: | ??? |
| Crystal structure: | cubic |
| Magnetism: | ferromagnetic |
| molar volume: | 6,59 · 10-6 m3/ mol |
| Mohs hardness: | 4,0 |
| Melting point: | 1455 ° C |
| Boiling point: | 2730 ° C |
| Heat of fusion: | 17.7 kJ / mol |
| Heat of vaporization: | 379 kJ / mol |
| Thermal conductivity: | 91 W |
| Chemical properties | |
| electronegativity: | 1,91 |
Did you know that ...
- Is there a copper alloy in all euro coins (1 cent to 2 euros)?
- the three countries Australia, Canada and Russia are responsible for about half of the world's copper production?
- Nickel was already used in ancient times as a coinage?
- copper dissolved in water takes on a blue color?
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