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unnilquadium |
2 definitions found From WordNet r 1.6 [wn]: unnilquadium n : a radioactive transuranic element which has been synthesized [syn: {rutherfordium}, {Rf}, {kurchatovium}, {Ku}, {Unq}, {element 104}, {atomic number 104}] From Elements database 20001107 [elements]: unnilquadium Symbol: Unq Atomic number: 104 Atomic weight: (261) Radioactive transactinide element. Expected to have similar chemical properties to those displayed by hafnium. Rf-260 was discovered by the Joint Nuclear Research Institute at Dubna (U.S.S.R.) in 1964. Researchers at Berkeley discovered Unq-257 and Unq-258 in 1964.
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