dubnium


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dub·ni·um

 (do͞ob′nē-əm)
n. Symbol Db
An artificially produced radioactive element with atomic number 105. The isotope with mass number 262 has the longest confirmed half-life (35 seconds), although longer half-lifes have been reported for some of its heavier isotopes. See Periodic Table.

[After Dubna, Russia, location of the United Institute of Nuclear Research.]

dubnium

(ˈdʌbnɪəm)
n
(Elements & Compounds) a synthetic transactinide element produced in minute quantities by bombarding plutonium with high-energy neon ions. Symbol: Du; atomic no 105. See hahnium
[C20: after Dubna, where it was first reported]

dub·ni·um

(do͞ob′nē-əm)
Symbol Db A synthetic, radioactive element that is produced from californium, americium, or berkelium. Its most stable isotope has a half-life of 34 seconds. Atomic number 105. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dubnium - a transuranic element
chemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
Translations
дубний
dubnium
Dubnium
dubnio
dubnium
dubnium
dubnium
dubnij
dubnio
ドブニウム
dubnis
dubnium
dubnium
dubn
dubniu
dubnium
dubnium
References in periodicals archive ?
They were, Curium - (Marie & Pierre Curie); Californium - (first produced in California); Einsteinium - (Albert); Fermium - (Enrico Fermi, Physicist); Mendelevium - (Dmitri Mendeleev); Bohrium - (Neils Bohr, Atomic Physicist); Dubnium - (named after a Russian Town of Dubnia); Tennessine - (Discovered in the National Laboratory of Tennessee).
Bedfordshire police have launched an investigation called Operation Dubnium and appealed to the public for assistance.
Decay of the heavier isotope eventually produces dubnium (atomic number 105), whereas the lighter isotope decays down to roentgenium (111).