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meitnerium |
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meitneriumSynthesized radioactive element of the transactinide series, atomic number 109, relative atomic mass 266. It was first produced in 1982 at the Laboratory for Heavy-Ion Research in Darmstadt, Germany, by fusing bismuth and iron nuclei; it took a week to obtain a single new, fused nucleus. It was known by the temporary name unnilennium until 1997 when it was named after the Austrian-born Swedish physicist Lise Meitner. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| During decay, one of the atoms gave rise to a daughter element 109, with an atomic mass of 268, and a granddaughter element 107, with a mass of 264. GSI, which has an unconfirmed claim to element 109, is now trying to confirm the apparent discovery of element 110. Confirmed discoveries of transuranic elements now go as far as element 109. |
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Element 109
