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  2. Biological roles of the elements - Wikipedia

    en.wikipedia.org/wiki/Biological_roles_of_the...

    Selenium, which is an essential element for animals and prokaryotes and is a beneficial element for many plants, is the least-common of all the elements essential to life. [ 3 ] [ 63 ] Selenium acts as the catalytic center of several antioxidant enzymes, such as glutathione peroxidase , [ 11 ] and plays a wide variety of other biological roles .

  3. Gold compounds - Wikipedia

    en.wikipedia.org/wiki/Gold_compounds

    Gold compounds are compounds by the element gold (Au). Although gold is the most noble of the noble metals , [ 1 ] [ 2 ] it still forms many diverse compounds. The oxidation state of gold in its compounds ranges from −1 to +5, but Au(I) and Au(III) dominate its chemistry.

  4. GOLD - Wikipedia

    en.wikipedia.org/wiki/GOLD

    Gold, a chemical element; Genomes OnLine Database; Global-scale Observations of the Limb and Disk, a NASA Explorer Mission of Opportunity; GOLD (parser), an open-source parser-generator of BNF-based grammars; Graduates of the Last Decade, an Institute of Electrical and Electronics Engineers program to garner more university level student members

  5. Precious metal - Wikipedia

    en.wikipedia.org/wiki/Precious_metal

    The Krugerrand is the first modern example of measuring in "pure gold": it should contain at least 12 ⁄ 11 ounces of at least 11 ⁄ 12 pure gold. Other bullion coins (for example the British Sovereign) show neither the purity nor the fine-gold weight on the coin but are recognized and consistent in their composition.

  6. Category:Gold compounds - Wikipedia

    en.wikipedia.org/wiki/Category:Gold_compounds

    Printable version; In other projects Wikimedia Commons; Wikidata item; ... Pages in category "Gold compounds" The following 13 pages are in this category, out of 13 ...

  7. A Visual Guide to Monarch Butterflies - AOL

    www.aol.com/visual-guide-monarch-butterflies...

    If you’re looking to take a deep dive into the monarch butterfly, be sure to check out our free monarch butterfly lesson plan, which can be downloaded and used to guide teaching or simply to ...

  8. Is Cow Colostrum Really 'Liquid Gold' When It Comes To Health ...

    www.aol.com/cow-colostrum-really-liquid-gold...

    In other words, keep in mind that these are potential benefits, and more scientific research is needed to back its effectiveness. 1. It may help boost immunity.

  9. Group 11 element - Wikipedia

    en.wikipedia.org/wiki/Group_11_element

    Group 11, by modern IUPAC numbering, [1] is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), gold (Au), and roentgenium (Rg), although no chemical experiments have yet been carried out to confirm that roentgenium behaves like the heavier homologue to gold.