Group+16Hr2

=Group 16 (Chalcogens)=

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Sulfur has probably the most allotropes(different forms) of any element, though the most common and stable form is the yellow crystals of S8 molecules. Sulfur resembles oxygen chemically but is less active and more acidic It is used especially in the chemical and paper industries.======

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Selenium is a photosensitive element that occurs in both crystalline and amorphous forms, it is a by-product in copper refining, and is used especially in glass, semiconductor devices, and alloys. Although selenium is lumped with the non-metals, and can form selenides similar to oxides and sulfides, its elemental state is that of a Metalloid semicondutcor.======