Standard Atomic Weight: 200.592(3)
Melting Point: 234.3210 K (−38.8290 °C, −37.8922 °F), Boiling Point: 629.88 K (356.73 °C, 674.11 °F)
Density: 13.534 g/cm3
Molecular Heat Capacity: 27.983 J/(mol·K)
Mercury is a chemical element with the symbol Hg and atomic number 80. It is commonly known as quicksilver and was formerly named hydrargyrum (/haɪˈdrɑːrdʒərəm/ hy-DRAR-jər-əm). A heavy, silvery d-block element, mercury is the only metallic element that is liquid at standard conditions for temperature and pressure; the only other element that is liquid under these conditions is the halogen bromine, though metals such as caesium, gallium, and rubidium melt just above room temperature.