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
Any element with atomic number 95 (Americium [Am]) or upwards is synthetic. A synthetic element is an element that was never or is no longer naturally occuring. All the currently synthesised elements are radioactive, but not all radioactive elements are synthesised.
A synthetic (or artificial) element is an element that is synthesised in a lab and is not naturally occuring. The synthetic elements start at Neptunium (Np) any are all synthetic from then on. The synthetic element with the highest atomic number currently confirmed by The IUPAC is Ununhexium (Uuh) which is still under it's IUPAC systematic placeholder name.
Synthetic elements are chemical elements created in laboratory: copernicium, mendelevium, hassium, darmstadtium, etc.
Synthetic elements are those which are not found in nature and can only be produced by artificial bombardment of atoms of other elements by sub-atomic particles.
Technicium and the trans-uranic elements.
Synthetic Elements are used in smoke detectors.
Synthetic elements might be harmful if they are ingested or inhaled. The elements can cause damage to the lungs, brains, and heart.
While there are some stable synthetic elements (eg technetium) and also naturally occurring elements which are radioactively unstable (eg radium), synthetic elements are more likely to be radioactively unstable. Their decay process produces radioactive emissions which are hazardous.
Elements can either be synthetic or natural. Synthetic elements are made artificially in laboratories, while natural elements exist in their natural state in nature. Natural elements can further be defined as native elements. These elements exist in their uncombined state.
Actinide is not an element, but is a series of elements. Of the actinide series of elements, all except actinium, thorium, protactinium, and uranium are considered to be synthetic elements because they are not found in nature in appreciable amounts.
Synthetic Elements are used in smoke detectors.
All the synthetic elements on the Periodic Table appear after Uranium (atomic no. 92). These are the only synthetic elements.
Yes, all synthetic elements are man made.
Synthetic elements might be harmful if they are ingested or inhaled. The elements can cause damage to the lungs, brains, and heart.
Synthetic or man-made elements. Obviously synthetic sounds significantly cooler.
not reactive
Carbon
einsteinium,......
radioactive
Radioactive
While there are some stable synthetic elements (eg technetium) and also naturally occurring elements which are radioactively unstable (eg radium), synthetic elements are more likely to be radioactively unstable. Their decay process produces radioactive emissions which are hazardous.
All transuranic elements are synthetic and radioactive.