What is hg meaning?

HG is a chemical symbol that stands for mercury, a chemical element with the atomic number 80. Mercury is a dense, silvery liquid metal that is the only metallic element that is liquid at standard conditions for temperature and pressure. It is used in a variety of household and industrial applications, including thermometers, barometers, electrical switches, and fluorescent lamps. However, exposure to mercury can be dangerous and toxic, causing neurological and other health problems, which has led to its restricted use and handling.