Timeline of chemical element discoveries
List of history of chemical elements
Timeline of chemical element discoveries
The discoveries of the 118 chemical elements known to exist as of 2026 are 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 determined. There are plans to synthesize more elements, and it is not known how many elements are possible. Each element's name, atomic number, year of first report, name of the discoverer, and notes related to the discovery are listed.
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