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Darmstadtium is a synthetic chemical element; it has symbol Ds and atomic number 110. It is extremely radioactive: the most stable known isotope, darmstadtium-281, has a half-life of approximately 14 seconds.
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This is an accepted version of this page This is the latest accepted revision, reviewed on 28 January 2025. Hypothetical chemical element, symbol Uue and atomic number 119 Chemical element with atomic number 119 (Uue) Ununennium, 119 Uue Theoretical element Ununennium Pronunciation / ˌ uː n. uː n ˈ ɛ n i ə m / ⓘ (OON -oon- EN -ee-əm) Alternative names element 119, eka-francium ...
Superheavy elements such as darmstadtium are produced by bombarding lighter elements in particle accelerators that induce fusion reactions.Whereas most of the isotopes of darmstadtium can be synthesized directly this way, some heavier ones have only been observed as decay products of elements with higher atomic numbers.
The currently accepted names and symbols of the chemical elements are determined by the International Union of Pure and Applied Chemistry (IUPAC), usually following recommendations by the recognized discoverers of each element.
Aerogen; Aerogens; Americanium; Atomic weight/Table; Cerium group; Cerium group element; Cerium group elements; Cristallogen; Cristallogens; Crystallogen; Crystallogens
There are indications that the team at the Joint Institute for Nuclear Research (JINR) in Russia plans to try this reaction in the future. The product of the 3n channel would be 294 Uue; its expected granddaughter 286 Mc was synthesised in a preparatory experiment at the JINR in 2021, using the reaction 243 Am(48 Ca,5n) 286 Mc.
The names for the chemical elements 104 to 106 were the subject of a major controversy starting in the 1960s, described by some nuclear chemists as the Transfermium Wars [1] [2] because it concerned the elements following fermium (element 100) on the periodic table.