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...
Element number 114 is now officially known asflerovium(symbol F1), after the Flerov Laboratory of Nuclear Reactions in Russia. The elements were created at the Flerov lab in Dubna, Russia, in 1998 (flerovium) and 2000 (livermorium) by hurling calcium ions, with 20 protons each, into a pie...
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...
for instance, will have a 10 per cent increase in mass. The expectation is that with an unusually high number of protons in the nucleus, the electrons will be moving fast
configuration of neutrons and protons because the nucleus would have a full complement of protons and neutrons making for longer life. The Dubna and Berkeley results seem to be evidence for this, since each isotope having an increasing number of neutrons (toward the optimum 184) has a longer ...