Lifetime2.m DecayAlpha Emission Isotopes SymbolMass NumberRelative Atomic MassIsotopic Composition 285Uuq285285.18370(111)# 286Uuq286286.18386(83)# 287Uuq287287.18560(83)# 288Uuq288288.18569(91)# 289Uuq289289.18728(79)# Mass Number The sum of the number of protons and neutrons of an atomic nucle...
Subsequently the team made element 114 on a number of occasions; cumulatively this provided enough evidence for The International Union of Pure and Applied Chemistry (IUPAC) to announce in June 2011 its acceptance of element 114’s discovery.(1) Flerovium was made by a fusion reaction of element...
Flerovium is the first element of what might be an “island of stability” among heavy nuclei. Synthetic elements heavier than uranium are generally unstable. Scientists have for some time thought that elements number 114 and above might possess a very stable configuration of neutrons and protons b...
This magic number theory meant that rather than the elements proceeding to a shorter and shorter existence, there could be a patch in the chart of protons and neutrons where the half-lives would be longer. It was called the island of stability and the first obvious target was element 114. ...