Properties of Bismuth (Bi)
Bismuth is a chemical element with the symbol (Bi) and atomic number 83. It belongs to the post-transition metals and is one of the elements in Group 15 of the periodic table. Bismuth is a brittle, crystalline, and white-pinkish metal with a high electrical resistance. It is often found in the Earth’s crust and is typically extracted as a byproduct of lead and copper production.
The following table provides a comprehensive list of bismuth (Bi) properties in both SI and US customary/Imperial units at normal temperature and pressure (NTP).
Click on the icon to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Crystal Structure | Rhombic |
| Atomic Number | 83 |
| Molar Mass | 208.98 g/mol |
| Density | 9790 kg/m3 |
| Mechanical Properties | Metric |
| Young’s Modulus (E) | 34 GPa |
| Shear Modulus (G) | 12.8 GPa |
| Bulk Modulus (K) | 34.97 GPa |
| Poisson’s Ratio (ν) | 0.33 |
| Mohs Hardness | 2.25 |
| Thermal Properties | Metric |
| Melting Point | 271.4 °C |
| Boiling Point | 1560 °C |
| Thermal Conductivity (27°C) | 7.87 W/m·K |
| Specific Heat Capacity (Cp) (25°C) | 122 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.34×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Resistivity | 1.07×10-4 Ω·cm |
Unless stated otherwise, all values are taken at room temperature (approximately 20°C or 68°F) and 1 atm pressure. (1 atm = 101,325 Pa)
Related Pages
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) A.M. Howatson, P.G. Lun, J.D. Todd, P.D. Engineering Tables and Data. United Kingdom: University of Oxford, Department of Engineering Science, 2009.