CHALCOGEN
Chalcogen
The chalcogens are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. It consists of the elements oxygen, sulfur, selenium, tellurium, and the radioactive element polonium . The synthetic element livermorium is predicted to be a chalcogen as well. Often, oxygen is treated separately from the other chalcogens, sometimes even excluded from the scope of the term "chalcogen" altogether, due to its very different chemical behavior from sulfur, selenium, tellurium and polonium. The word "chalcogen" is derived from a combination of the Greek word khalkόs principally meaning ...The above text is a snippet from Wikipedia: Chalcogen
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chalcogen
Noun
The above text is a snippet from Wiktionary: chalcogen
and as such is available under the Creative Commons Attribution/Share-Alike License.