dubnium

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Pronunciation

• (British) enPR: dŭb'nēəm, IPA: /ˈdʌbniəm/
• (America) enPR: do͞ob'nēəm, IPA: /ˈduːbniəm/

Noun

dubnium (uncountable)

1. A transuranic chemical element (symbol Db) with atomic number 105.
2. (chemistry, obsolete) A rejected name for rutherfordium.

Synonyms

• eka-tantalum (used before the element was discovered)
• hahnium (proposed by American scientists, but rejected; still used by some Western scientists; see also hassium)
• joliotium (proposed by the IUPAC, but rejected)
• nielsbohrium (proposed by Russian scientists, but rejected)
• unnilpentium (used before the element had been officially named to avoid disputes between Western and Russian scientists over "hahnium" and "dubnium" respectively)

Related terms

• Dubna
• dubnate

Translations

• French: dubnium
• German: Dubnium
• Italian: dubnio
• Portuguese: dúbnio
• Russian: ду́бний
• Spanish: dubnio

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