Dubnium
Synthetic element with shared discovery credit.
It is highly radioactive and does not occur naturally on Earth, being produced artificially.
- half_life
- about 16 hours (~0.67 days)
Lore & Background
The naming controversy began when JINR proposed the name bohrium (Bo), later changed to nielsbohrium (Ns), while LBL proposed hahnium (Ha). The dispute was part of the Transfermium Wars.
Reader's Guide
Dubnium is significant as a synthetic element that extends the periodic table into the transactinide series, confirming theoretical predictions about the properties of group 5 elements. Its discovery was a key episode in the Transfermium Wars, a rivalry between American and Soviet scientists over the synthesis of heavy elements. The resolution of the naming dispute through the Transfermium Working Group established a precedent for international cooperation in element discovery. Dubnium's chemistry, though limited by its short half-life, has been investigated and confirms its placement as a member of group 5, with a dominant +5 oxidation state and properties similar to niobium and tantalum, though with some anomalies due to relativistic effects. The element's name honors the town of Dubna, site of the JINR, reflecting the shared credit between the Soviet and American teams.
Did You Know?
- Dubnium does not occur naturally on Earth and is produced artificially.
Frequently Asked Questions
Can you find Dubnium in nature?
No—every atom of Dubnium ever created has been produced artificially in a particle accelerator or nuclear reactor. It has never been detected in natural deposits, ores, or cosmic-ray spallation products on Earth.
More in Periodic Table & Elements 1-21
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