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'''Mercury''' (symbol Hg) is a [[metal]]lic element, liquid at room temperatures.  Mercury is poisonous to human and animals.

'''Mercury''' (symbol Hg), also known as ''quicksilver'', is a [[metal]]lic element with the atomic number of 80, liquid at room temperatures.  Mercury is poisonous to human and animals.

Mercury is found in air, water, and soil. It exists in several forms: elemental or metallic mercury, inorganic mercury compounds, and organic mercury compounds.  

Mercury is found in air, water, and soil. It exists in several forms: elemental or metallic mercury, inorganic mercury compounds, and organic mercury compounds.