Mercury - HG（Hydrargyrum）

Mercury is a chemical element with the chemical symbol Hg, atomic number 80 and atomic weight 200.592 u. Mercury is located in the d zone of the periodic table. It is a dense, silvery-white transition metal that is liquid at room temperature. It is slightly volatile and has properties similar to those of rare gases. In addition to mercury, the only stable element that is liquid at room temperature is bromine, while cesium, gallium and rubidium melt at a temperature slightly higher than room temperature. The melting point of mercury is −38.83 °C (−37.89 °F; 234.32 K) and the boiling point is 356.73 °C (674.11 °F; 629.88 K), which is the smallest liquid temperature range of all metal elements.