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|
Nickel
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Ni | 28 | 58.6934 | 1455 °C | 2913 °C | Solid | 8.908 g/cm3 | Metal  |
|
|
|
| General |
| Name, symbol, number |
nickel, Ni, 28 |
| Chemical series |
transition metals |
| Group, period, block |
10, 4, d |
| Appearance |
lustrous, metallic and
silvery with a gold tinge
 |
| Standard atomic weight |
58.6934(2) g·mol−1 |
| Electron configuration |
[Ar] 3d8 4s2 |
| Electrons per shell |
2, 8, 16, 2 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
8.908 g·cm−3 |
| Liquid density at m.p. |
7.81 g·cm−3 |
| Melting point |
1728 K
(1455 °C, 2651 °F) |
| Boiling point |
3186 K
(2913 °C, 5275 °F) |
| Heat of fusion |
17.48 kJ·mol−1 |
| Heat of vaporization |
377.5 kJ·mol−1 |
| Heat capacity |
(25 °C) 26.07 J·mol−1·K−1 |
Vapor pressure
| P/Pa |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T/K |
1783 |
1950 |
2154 |
2410 |
2741 |
3184 |
|
| Atomic properties |
| Crystal structure |
face centered cubic |
| Oxidation states |
2, 3
(mildly basic oxide) |
| Electronegativity |
1.91 (Pauling scale) |
Ionization energies
(more) |
1st: 737.1 kJ·mol−1 |
| 2nd: 1753.0 kJ·mol−1 |
| 3rd: 3395 kJ·mol−1 |
| Atomic radius |
135 pm |
| Atomic radius (calc.) |
149 pm |
| Covalent radius |
121 pm |
| Van der Waals radius |
163 pm |
| Miscellaneous |
| Magnetic ordering |
ferromagnetic |
| Electrical resistivity |
(20 °C) 69.3 nΩ·m |
| Thermal conductivity |
(300 K) 90.9 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 13.4 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(r.t.) 4900 m·s−1 |
| Young's modulus |
200 GPa |
| Shear modulus |
76 GPa |
| Bulk modulus |
180 GPa |
| Poisson ratio |
0.31 |
| Mohs hardness |
4.0 |
| Vickers hardness |
638 MPa |
| Brinell hardness |
700 MPa |
| CAS registry number |
7440-02-0 |
| Selected isotopes |
|
|
| References |
|
Nickel Compounds
|
Source: Wikipedia article Nickel
|
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Chemistry Quick Facts
