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Hg is the modern chemical symbol for mercury. [28] It is an abbreviation of hydrargyrum, a romanized form of the ancient Greek name for mercury, ὑδράργυρος (hydrargyros). Hydrargyros is a Greek compound word meaning ' water-silver ', from ὑδρ - (hydr-), the root of ὕδωρ (hydor) ' water ', and ἄργυρος (argyros ...
Hg is the symbol of chemical element mercury (from its Latin name hydrargyrum). Hg, hg, HG, inHg or "Hg may also refer to: Arts and media. H. G. Wells, English writer;
Mercury barometer. A millimetre of mercury is a manometric unit of pressure, formerly defined as the extra pressure generated by a column of mercury one millimetre high. . Currently, it is defined as exactly 133.322 387 415 pascals, or approximately 1 torr ( = = , =
For some elements, this is because the material was known in ancient times, while for others, the name is a more recent invention. For example, Pb is the symbol for lead (plumbum in Latin); Hg is the symbol for mercury (hydrargyrum in Greek); and He is the symbol for helium (a Neo-Latin name) because helium was not known in ancient Roman times.
Hg is a private equity firm targeting technology buyouts primarily in Europe and the US. Hg focuses on investments in technology and services sectors. It invests out of its 8th £2.5 billion core fund and its 2nd £575 million Mercury fund, targeting smaller technology buyouts, both raised in February 2017. [1]
The elements of group 12 have an oxidation state of +2 in which the ions have the rather stable d 10 electronic configuration, with a full sub-shell. However, mercury can easily be reduced to the +1 oxidation state; usually, as in the ion Hg 2+ 2, two mercury(I) ions come together to form a metal-metal bond and a diamagnetic species. [24]
Hyperemesis gravidarum (HG) is a pregnancy complication that is characterized by severe nausea, vomiting, weight loss, and possibly dehydration. [1] Feeling faint may also occur. [2] It is considered a more severe form of morning sickness. [2] Symptoms often get better after the 20th week of pregnancy but may last the entire pregnancy duration.
Inch of mercury (inHg and ″Hg) is a non-SI unit of measurement for pressure. It is used for barometric pressure in weather reports , refrigeration and aviation in the United States . It is the pressure exerted by a column of mercury 1 inch (25.4 mm) in height at the standard acceleration of gravity .