a radioactive metal
Crossword Clue

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AnswerCrossword Clue
actiniuma radioactive metal
actiniumsACTINIUM, a radioactive metal
americiumThe chemical element of atomic number 95, a radioactive metal of the actinide series
californiumThe chemical element of atomic number 98, a radioactive metal of the actinide series, first produced by bombarding curium with helium ions
franciuma short-lived radioactive element of the alkali-metal group occurring naturally as a disintegration product of actinium and also produced artificially see element table
franciumsa short-lived radioactive element of the alkali-metal group occurring naturally as a disintegration product of actinium and also produced artificially see element table
technetiumThe chemical element of atomic number 43, a radioactive metal. Technetium was the first element to be created artificially, in 1937, by bombarding molybdenum with deuterons
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
lawrenciumThe chemical element of atomic number 103, a radioactive metal of the actinide series. Lawrencium does not occur naturally and was first made by bombarding californium with boron nuclei
berkeliumThe chemical element of atomic number 97, a radioactive metal of the actinide series. Berkelium does not occur naturally and was first made by bombarding americium with helium ions
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
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