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|
Bismuth
Chemical Properties & Compounds
| Symbol | Atomic Number | Atomic Weight | Melting Point | Boiling Point | Phase | Density | Classification |
| Bi | 83 | 208.98040 | 271.5 °C | 1564 °C | Solid | 9.78 g/cm3 | Metal |
|
|
|
| General |
| Name, Symbol, Number |
bismuth, Bi, 83 |
| Chemical series |
poor metals |
| Group, Period, Block |
15, 6, p |
| Appearance |
lustrous pink
 |
| Standard atomic weight |
208.98040(1) g·mol−1 |
| Electron configuration |
[Xe] 4f14 5d10 6s2 6p3 |
| Electrons per shell |
2, 8, 18, 32, 18, 5 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
9.78 g·cm−3 |
| Liquid density at m.p. |
10.05 g·cm−3 |
| Melting point |
544.7 K
(271.5 °C, 520.7 °F) |
| Boiling point |
1837 K
(1564 °C, 2847 °F) |
| Heat of fusion |
11.30 kJ·mol−1 |
| Heat of vaporization |
151 kJ·mol−1 |
| Heat capacity |
(25 °C) 25.52 J·mol−1·K−1 |
Vapor pressure
| P(Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T(K) |
941 |
1041 |
1165 |
1325 |
1538 |
1835 |
|
| Atomic properties |
| Crystal structure |
rhombohedral |
| Oxidation states |
3, 5
(mildly acidic oxide) |
| Electronegativity |
2.02 (scale Pauling) |
Ionization energies
(more) |
1st: 703 kJ·mol−1 |
| 2nd: 1610 kJ·mol−1 |
| 3rd: 2466 kJ·mol−1 |
| Atomic radius |
160 pm |
| Atomic radius (calc.) |
143 pm |
| Covalent radius |
146 pm |
| Miscellaneous |
| Magnetic ordering |
diamagnetic |
| Electrical resistivity |
(20 °C) 1.29 µ Ω·m |
| Thermal conductivity |
(300 K) 7.97 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 13.4 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 1790 m/s |
| Young's modulus |
32 GPa |
| Shear modulus |
12 GPa |
| Bulk modulus |
31 GPa |
| Poisson ratio |
0.33 |
| Mohs hardness |
2.25 |
| Brinell hardness |
94.2 MPa |
| CAS registry number |
7440-69-9 |
| Selected isotopes |
|
|
| References |
|
Bismuth Compounds
|
Source: Wikipedia article Bismuth
|
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Chemistry Quick Facts
