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Radioactive
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Do all synthetic elements have more than 92 elements?
All the synthetic elements on the Periodic Table appear after Uranium (atomic no. 92). These are the only synthetic elements.
Synthetic elements are formed by experimentation?
Yes, all synthetic elements are man made.
After which number are all elements synthetic?
92
What is the name of the series which contains most of the synthetic and radioactive elements?
All of the actinides are radioactive, and almost all are synthetic.
What group on the periodic table are synthetic elments?
Technetium (43), Promethium (61), and all the transuranic elements are synthetic.
Synthetic elements are found in what group?
Synthetic elements are found in the group of transuranium elements, which are elements with atomic numbers higher than uranium (92) on the periodic table. These elements are artificially created in a laboratory through nuclear reactions and have unstable nuclei.
What is synthetic element?
a synthetic element is not naturally found in the earth, they are handmade elements. OR elements that do not occur naturally and that are made in laboratories.
Which elements have no useful purposes at all?
All elements have a useful purpose, including the synthetic actinides that have half-lives measured in milliseconds.
What elements are synthetic elements?
Sythetic elements are those with half lifes to small to be found in nature, they are manmade and generally fairly unstable. The synthetic elements are: All elements with atomic numbers 1 through 98 are naturally occurring at least in trace quantities, but the following elements are usually produced through synthesis. Except for francium, they were all discovered through synthesis before being found in nature.Element nameChemical SymbolAtomic NumberFirst definite discoveryTechnetiumTc431936PromethiumPm611945AstatineAt851940FranciumFr871939NeptuniumNp931940PlutoniumPu941940AmericiumAm951944CuriumCm961944BerkeliumBk971949CaliforniumCf981950 The following elements do not occur naturally on Earth. All are transuranium elements and have atomic numbers of 99 and higher. Element nameChemical SymbolAtomic NumberFirst definite synthesisEinsteiniumEs991952FermiumFm1001952MendeleviumMd1011955NobeliumNo1021966LawrenciumLr1031961RutherfordiumRf1041966 (USSR), 1969 (USA) *DubniumDb1051968 (USSR), 1970 (USA) *SeaborgiumSg1061974BohriumBh1071981HassiumHs1081984MeitneriumMt1091982DarmstadtiumDs1101994RoentgeniumRg1111994CoperniciumCn1121996UnuntriumUut1132003FleroviumFl1141999UnunpentiumUup1152003LivermoriumLv1162000UnunseptiumUus1172010UnunoctiumUuo1182002
What elements are considered synthetic elements?
Pretty much all elements after Uranium are synthetic (made by man) Any element above 94 (plutonium and neptunium were also discovered in extremely small concentrations in uranium minerals), are all considered synthetic since they do not occur naturally on the earth, but were made under laboratory conditions.
All synthetic elements are?
man-made elements that do not occur naturally in the environment. They are typically created in laboratories through nuclear reactions or particle bombardment. Examples of synthetic elements include technetium (Tc) and americium (Am).
What elements is radioactive and synthetic barrium cesium currium and xenon?
Curium {Note correct spelling} is only element in the list given that is radioactive and synthetic.^ not correct answer and not even spelled right the correct answer is "lawrencium"The rare earth elements are located at the bottom of the periodic table and are comprised of the lanthanoid series and the actinoid series.The actinoid series is the second row of rare earth elements. All of these elements are radioactive, and all of these elements (except actinium, thorium, protactinium, and uranium) are synthetic.
