Half Life1.2922 y Lifetime1.865y DecayAlpha Emission Isotopes SymbolMass NumberRelative Atomic MassIsotopic Composition 240Es240240.06892(43)# 241Es241241.06854(24)# 242Es242242.06975(35)# 243Es243243.06955(25)# 244Es244244.07088(20)# 245Es245245.07132(22)# ...
This half-life indicates that 252Es is the longest-lived einsteinium isotope.doi:10.1016/0022-1902(77)80089-4IrshadAhmadandFrankWagnerJr.Elsevier B.V.Journal of Inorganic and Nuclear Chemistry
(Elements & Compounds) a metallic transuranic element artificially produced from plutonium. Symbol: Es; atomic no: 99; half-life of most stable isotope,252Es: 276 days [C20: New Latin, named after Albert Einstein] Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © Har...
8.That is the second longest-lived version of einsteinium, with a half-life of 276 days. 9.The discoveries, of einsteinium and fermium, were initially kept secret for security reasons, then unveiled in 1955, not long after the scientists they had been named after had died. ...
The half life of a radioactive element is the time it takes for half of a sample of the element to break down. For example, suppose that scientists made 10 grams of einsteinium. About three weeks later (20.47 days later), only 5 grams of the element would be left. After another three...
They discovered the isotope 253, which has a half-life of 20.5 days. In 1961, enough einsteinium was produced to separate a macroscopic amount of isotope 253. This sample weighted about 0.01 mg and was measured using a special balance. The material produced was used to produce mendelevium....
Half-Life1.292174023338 y Lifetime1.864535768645 y Decay ModeAlphaEmission Quantum Numbers5I15/2 Neutron Cross Section160 Neutron Mass AbsorptionN/A Known Isotopes 240Es,241Es,242Es,243Es,244Es,245Es,246Es,247Es,248Es,249Es,250Es,251Es,252Es,253Es,254Es,255Es,256Es,257Es,258Es ...
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energy levelsground stateexcited statesatomic numberatomic weightexcitation energyspin and parityhalf-lifewidth of the state in the center-of-mass frameThis document is part of Subvolume C `Tables of Excitations of Proton- and Neutron-rich Unstable Nuclei' of Volume 19 `Nuclear States from Charged...
Energy levels for Es-243 (Einsteinium-243)nuclear statesenergy levelsground stateexcited statesatomic numberatomic weightexcitation energyspin and parityhalf-lifewidth of the state in the center-of-mass frameThis document is part of Subvolume C 'Tables of Excitations of Proton- and Neutron-rich ...