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The chemical element of atomic number 112, a highly unstable substance that is produced artificially.
- ‘Element 112 was first observed in 1996 but was given its new name copernicium only this past February.’
- ‘Copernicium, discovered 13 years ago and previously known as element 112, was officially added to the table only a few weeks ago.’
- ‘The half-life of the new element Copernicium is not yet clear.’
Early 21st century from the name of Nicolaus Copernicus + -ium.
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