Element in uranium series
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RADIUMAElement in uranium series
protactiniuma radioactive metallic chemical element, a member of the actinide series which occurs as a decay product in uranium ores
protactiniumsPROTACTINIUM, a radioactive metallic chemical element, a member of the actinide series which occurs as a decay product in uranium ores
protactiniumThe chemical element of atomic number 91, a radioactive metal of the actinide series, occurring in small amounts as a product of the natural decay of uranium
promethiumThe chemical element of atomic number 61, a radioactive metal of the lanthanide series. It was first produced artificially in a nuclear reactor and occurs in nature in traces as a product of uranium fission
neptuniumThe chemical element of atomic number 93, a radioactive metal of the actinide series. Neptunium was discovered as a product of the bombardment of uranium with neutrons, and occurs only in trace amounts in nature
plutoniumThe chemical element of atomic number 94, a dense silvery radioactive metal of the actinide series, used as a fuel in nuclear reactors and as an explosive in nuclear fission weapons. Plutonium only occurs in trace amounts in nature but is manufactured in nuclear reactors from uranium-238
transuranicdenoting any chemical element having atomic number beyond uranium (92), not occuring in nature but artificially produced by bombardment of atoms
enrichedIncrease the proportion of a particular isotope in (an element), esp. that of the fissile isotope U-235 in uranium so as to make it more powerful or explosive
enrichingIncrease the proportion of a particular isotope in (an element), esp. that of the fissile isotope U-235 in uranium so as to make it more powerful or explosive
nobeliumtransuranic element in the actinium series. Symbol: No; at. no.: 102
molybdenumThe chemical element of atomic number 42, a brittle silver-gray metal of the transition series, used in some alloy steels
mendeleviumThe chemical element of atomic number 101, a radioactive metal of the actinide series. It does not occur naturally and was first made in 1955 by bombarding einsteinium with helium ions
einsteiniumThe chemical element of atomic number 99, a radioactive metal of the actinide series. Einsteinium does not occur naturally and was discovered in 1953 in debris from the first hydrogen bomb explosion
neodymiumThe chemical element of atomic number 60, a silvery-white metal of the lanthanide series. Neodymium is a component of misch metal and some other alloys, and its compounds are used in coloring glass and ceramics
ceriuma malleable ductile steel-grey element of the lanthanide series of metals, used in lighter flints and as a reducing agent in metallurgy. Symbol: Ce; atomic no: 58; atomic wt: 140.115; valency: 3 or 4; relative density: 6.770; melting pt: 798°C; boiling pt: 3443°C