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Taking Mystery out of Heavy Metals The term "Heavy Metals" is generally interpreted to include those metals from periodical table groups IIA through VIA (see periodical table below). The semi-metallic elements boron, arsenic, selenium, and tellurium are often included in this classification. At trace levels, many of these elements are necessary to support life. However, at elevated levels they become toxic, may build up in biological systems (such as human, animal or vegetative tissues), and become a significant health hazard. For
information on the properties click the link of appropriate symbol (for example
for hydrogen click H in the upper left corner below). Explore. Have
fun. It is also educational. Periodical
Table of the Elements
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Revised: July 27, 2010 07:24 -0500, All Rights Reserved (c) Kulisz & Dahlmann, 2002 - 2010 |