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What is Hg on the periodic table?

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Miscellaneous Mercury Facts. Mercury compounds with the +2 oxidation states are known as 'mercuric' in older texts. Example: HgCl 2 was known as mercuric chloride. Mercury compounds with the +1 oxidation state are known as 'mercurous' in older texts. Example: Hg 2 Cl 2 was known as mercurous chloride. Mercury is rarely found free in nature. read more

Organic mercury compounds are important - and dangerous. Methyl mercury is a lethal pollutant found in rivers and lakes. The main source of pollution is industrial wastes settling to the river and lake bottoms. As mercury is a very volatile element, dangerous levels are readily attained in air. Mercury vapour should not exceed 0.1 mg m-3 in air. read more

Mercury has been known since ancient times. The origin of the name comes from the Latin word hydrargyrum meaning liquid silver. It is a heavy, silver-white metal, liquid at ordinary temperatures, stable in air and water. Mercury is unreactive with alkalis and most acids. It gives off poisonous vapour that has a chronic cumulative effect. read more

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