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element 112

noun, Chemistry, Physics.
Formerly ununbium. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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element 112 in Science
element 112  
Symbol Uub
An artificially produced radioactive element whose isotope has a mass number of 277 and a half-life of 280 milliseconds. Atomic number 112. Also called ununbium. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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