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It's Elemental
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 105
Db
Dubnium
268
Dubnium
Atomic Number:105
Atomic Weight:268
Melting Point:Unknown
Boiling Point:Unknown
Density:Unknown
Phase at Room Temperature:Solid
Element Classification:Metal
RadioactiveArtificially Produced
Period Number:7Group Number:5Group Name:none
What's in a name?Named for the Joint Institute for Nuclear Research at Dubna, Russia.
Say what?Dubnium is pronounced as DUB-ni-em.
History and Uses:

Scientists working at the Joint Institute for Nuclear Research in Dubna, Russia, first reported the production of dubnium in 1967. They bombarded atoms of americium-243 with ions of neon-22, forming atoms of dubnium-260 and five free neutrons and atoms of dubnium-261 and four free neutrons. In 1970, a group of scientists working at the Lawrence Radiation Laboratory, now known as the Lawrence Berkeley Laboratory, in Berkeley, California, bombarded atoms of californium-249 with ions of nitrogen-15, forming atoms of dubnium-260 and 4 free neutrons. Credit for the discovery of dubnium is still under debate.

Dubnium's most stable isotope, dubnium-268, has a half-life of about 16 hours. It decays into lawrencium-254 through alpha decay, into rutherfordium-268 through electron capture or decays through spontaneous fission.

Due to the small amounts produced and its short half-life, there are currently no uses for dubnium outside of basic scientific research.

Estimated Crustal Abundance:Not Applicable
Estimated Oceanic Abundance:Not Applicable
Number of Stable Isotopes:0(View all isotope data)
Ionization Energy:Unknown
Oxidation State:Unknown
Electron Shell Configuration:
(Unconfirmed)
1s2
2s22p6
3s23p63d10
4s24p64d104f14
5s25p65d105f14
6s26p66d3
7s2

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