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What is the Greek name of the mercury and write the symbol of mercury?

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Answer
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Hint: Mercury is the only metal that's a liquid at degree Centigrade and pressure. Mercury features a very high physical phenomenon, so it forms rounded beads of liquid. Although mercury and all its compounds are known to be highly toxic, it has been considered therapeutic throughout much of history.

Complete answer:
The mercury symbol Hg comes from its Greek name, hydrargyrum, which suggests liquid silver and represents its shiny color. Mercury is very toxic.
For instance, hydrargyrum, the Latin name for Mercury (Hg), was taken from the first Greek hydrargyrum, which meant “water silver.” Also historically referred to as “quicksilver,” elemental mercury may be a shiny silver metal that's liquid at temperature .
Facts of mercury
Mercury may be a very toxic element. It can enter our body through an open wound or by the inhaling or ingesting of it. It can then cause damage to nerves, the liver and therefore the kidney, and a number of other other symptoms.
• Atomic number (number of protons within the nucleus): 80
• Atomic symbol (on the table of Elements): Hg
• Atomic weight (the average mass of the atom): 200.59
• Density: 13.5336 grams per milliliter.
• Phase at room temperature: Liquid

Note:
It's never safe to touch mercury. Mercury is the only metal which is in liquid state at any temperature. In its liquid metal form, mercury absorbs instantly into the skin; but it also has a particularly high vapour pressure, so an open container of mercury disperses the metal into the air.