Hg (Latinized Greek: hydrargyrum, from "hydr-" meaning watery or liquid and "argyros" meaning silver)
- compliments of Wikipedia
The simple answer is: Because mercurous ion exists in dimer form.So first two represents two mercurous atoms and the latter one represents total charge of +2.
It is based on its Latin name Hydrargyrum from from the Greek "hydr-" water and "argyros" silver
Mercury was originally named hydrargyrum,
Hg is the chemical symbol for mercury
Hg is the chemical symbol for the metal Mercury.
Hg is Mercury's symbol
Mercury is an element. It is identified on the Periodic Table as "Hg."
Hg stands for mercury metal..only liquid state meta
Hg is the chemical symbol for mercury
Liquid mercury is a pure element its formula is Hg.
Hg is the chemical symbol for the metal Mercury.
Hg is the chemical symbol for mercury.
Hg is Mercury's symbol
Hg is the chemical symbol of mercury.
Mercury
Hg is an element. Mercury
Hg, for hydragyrum, latin of mercury
The chemical symbol for mercury is Hg. The atomic number for the element is 80. It is one of the only liquid elements on the table.
Mercury is an element. It is identified on the Periodic Table as "Hg."
Mercury