Properties of Mercury (Hg)
Mercury is a chemical element with the symbol (Hg) and atomic number 80. It is a heavy, silvery-white metal that is liquid at room temperature, making it the only metal in this state under standard conditions. Mercury has a variety of uses, including in thermometers, barometers, and some electrical switches.
The following table provides a comprehensive list of mercury (Hg) 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 | 80 |
| Molar Mass | 200.59 g/mol |
| Density | 13546 kg/m3 |
| Thermal Properties | Metric |
| Melting Point | -38.8 °C |
| Boiling Point | 356.6 °C |
| Thermal Conductivity (27°C) | 8.34 W/m·K |
| Specific Heat Capacity (Cp) (25°C) | 140 J/kg·K |
| Coefficient of Thermal Expansion (αL) (25°C) | 6.04×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Resistivity | 9.61×10-5 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.