unnilennium

unnilennium

[yoo-ni-len-ee-uhm]
noun Chemistry, Physics.
former name of meitnerium. Symbol: Une
Also called element 109.
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Encyclopedia Britannica
Encyclopedia

unnilennium

an artificially produced element belonging to the transuranium group, atomic number 109. It is predicted to have chemical properties resembling those of iridium.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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