What is the difference between rg and hg?

The difference between rg and hg lies in hg, that is, mercury is a chemical element, ranking 80 th in the periodic table of elements. Commonly known as mercury. Element symbol Hg, located in the 6th period and IIB group of the periodic table of chemical elements, is the only metal that exists in liquid state at normal temperature and pressure (strictly speaking, gallium (symbol Ga, 3 1 element) and cesium (symbol Cs, element 55) are also liquid state at room temperature (29.76℃ and 28.44℃)) and rg is a model for generations.

The chemical meaning expressed by mercury

Hg is mercury and mercury is a chemical element, ranking 80th in the periodic table of elements. Commonly known as mercury. There are also other names such as "Bai Zhuo, slave girl, Zhuo, Shen Jiao, lead essence, red mercury, sand mercury, spirit liquid, clown," and so on. The element symbol Hg, located in the 6th period and IIB group of the periodic table of chemical elements, is the only metal that exists in liquid state at normal temperature and pressure (strictly speaking, gallium (symbol Ga, 3 1 element) and cesium (symbol Cs, element 55) are also in liquid state at room temperature (29.76℃ and 28.44℃).

Mercury is a silvery white shiny heavy liquid, which is chemically stable and insoluble in acid and alkali. Mercury can evaporate at room temperature, and mercury vapor and mercury compounds are very toxic (chronic). Mercury has a long history and is widely used. In medieval alchemy, it was called the sacred three elements of alchemy of sulfur and salt.