Transuranium element

Chemical elementChemical base material which cannot be chemically converted ... in the classification of elementsSystem for tabulating elements according to their atomic num..., the atomic numberNumber of protons in an atomic nucleus. Each chemical elemen... of which is greater than 92, that of uraniumNatural radioactive element with the atomic number 92. The n.... Except for the plutoniumPlutonium - the 94th element in the classification of elemen... isotopes Pu 244 (half-lifeThe period during which half of the nuclei decay in a quanti... about 80 million years) and Pu 239 (continuous reformation in uraniumNatural radioactive element with the atomic number 92. The n... by neutronUncharged elementary particle with a mass of 1.67492716 ·10... capture in U 238 by neutrons from the spontaneous fissionSee 'nuclear fission'. of U 238) detected in very small quantities, all transuranium elements must be produced artifi-cially.