Wikipedia definition
1. Timeline of chemical elements discoveriesThe discovery of the elements known to exist today is presented here in chronological order. The elements are listed generally in the order in which each was first defined as the pure element, as the exact date of discovery of most elements cannot be accurately defined. Given is each element's name, atomic number, year of first report, name of the discoverer, and some notes related to the discovery.
Read “Timeline of chemical elements discoveries” on English Wikipedia
Read “化学元素発見の年表” on Japanese Wikipedia
Read “Timeline of chemical elements discoveries” on DBpedia


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