What is the periodic element Hg?
mercury (Hg), also called quicksilver, chemical element, liquid metal of Group 12 (IIb, or zinc group) of the periodic table.
Why does Hg stand for mercury?
The chemical symbol for Mercury is Hg. Mercury was named after the Roman god. Its chemical symbol (Hg) comes from hydrargyrum from the Greek word hydrargyros meaning ‘water’ and ‘silver’. Mercury is classified as a “Transition Metal” as it is ductile, malleable, and is able to conduct heat and electricity.
What is the Latin name of Hg?
hydrargyrum
For instance, hydrargyrum, the Latin name for Mercury (Hg), was taken from the original Greek hydrargyros, which meant “water silver.” Also historically known as “quicksilver,” elemental mercury is a shiny silver metal that is liquid at room temperature.
What is unusual about the element Hg?
Mercury is the only metal that is a liquid at standard temperature and pressure. The only other liquid element under standard conditions is bromine (a halogen), although the metals rubidium, cesium, and gallium melt at a temperature just above room temperature. Mercury is a very rare element in the Earth’s crust.
What is the density of Hg?
13.6 g.cm-3
Chemical properties of mercury – Health effects of mercury – Environmental effects of mercury
| Atomic number | 80 |
|---|---|
| Density | 13.6 g.cm-3 at 20°C |
| Melting point | – 38.9 °C |
| Boiling point | 356.6 °C |
| Vanderwaals radius | 0.157 nm |
Is mercury poisonous to touch?
Mercury is a very toxic or poisonous substance that people can be exposed to in several ways. If it is swallowed, like from a broken thermometer, it mostly passes through your body and very little is absorbed. If you touch it, a small amount may pass through your skin, but not usually enough to harm you.
Is mercury flammable?
Mercury is non-combustible. The agent itself does not burn, but it may react upon heating to produce corrosive and/or toxic fumes.
How is mmHg calculated?
As discussed earlier we know that one millimetre of mercury is the pressure exerted by a 1mm vertical column of mercury at 0 degree Celsius. And we also know that one mmHg is also equal to 1 torr, which is 1 / 760 of atmospheric pressure (atm) that is 1 atm = 760 mmHg.
