ununbium

Uub noun a radioactive transuranic element
Found on https://www.encyclo.co.uk/local/20974

ununbium

ununbium (yOOnŭn'bēum) , artificially produced radioactive chemical element; symbol Uub; at. no. 112; mass number of most stable isotope 285; m.p., b.p., sp. gr., and valence unknown. Situated in Group 12 of the periodic table, it is expected to have properties similar to those of zi...
Found on http://www.infoplease.com/ce6/sci/A0850126.html
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