Sulfur or sulphur (pronounced /ˈsʌlfɚ/, see spelling below) is the chemical element that has the atomic number 16. It is denoted with the symbol S.
Sulfur dioxide (also sulphur dioxide) is the chemical compound with the formula SO 2. This important gas is the main product from the combustion of sulfur compounds and is of ...
History, properties, production, and uses.
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