What is the chemical symbol for mercury?

The chemical symbol for mercury is Hg, which is derived from the Latin name for mercury, "hydrargyrum," meaning "water-silver" due to its liquid form and silvery appearance. This symbol is used universally in chemistry to represent mercury in chemical equations and discussions regarding its properties, behaviors, and uses.

Using the Latin origins for elemental symbols is a common practice in chemistry, which explains why Hg might not seem immediately intuitive to those who are more familiar with the English name for the element. Its significant applications, particularly in thermometers, barometers, and fluorescent lighting, make understanding its symbol crucial for professionals in the field. The other options do not correspond to any established symbols in the periodic table, making them incorrect for representing mercury.