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copernicium

[ koh-per-nis-ee-uhm ]

noun

, Chemistry, Physics.
  1. a superheavy, synthetic, radioactive element with a very short half-life. : Cn; : 112.


copernicium

/ kō′pər-nēsē-əm /

  1. Symbol Cn A synthetic radioactive element that has only been produced in trace amounts. The most stable isotope has a mass number of 285 and a half-life of about 34 seconds. Atomic number 112.
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Word History and Origins

Origin of copernicium1

First recorded in 1005–10; named after Polish astronomer Nicolaus Copernicus.
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Example Sentences

Already, the longer half-lives of some isotopes of copernicium and flerovium offer “a first indication that this concept is correct, and that more long-lived isotopes just await discovery”, says Düllmann.

From Nature

Element 113 sits between copernicium and flerovium on the periodic table.

From US News

There are a few of those this time around: copernicium among them.

Dr. Renner recalled during the naming of element 112 — now known as copernicium — that an official from a school in New York called and said that students there thought it should instead be named after their school: P.S.

They are Darmstadtium, or Ds, which has 110 protons in its nucleus and was named after the town in which it was discovered; Roentgenium, or Rg, with 111 protons, named after the discoverer of X-rays Wilhelm Conrad Roentgen; and Copernicium, or Cn, which has 112 protons and is named after the Polish astronomer Copernicus, who disrupted the view that the Earth was the center of the universe.

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Copernican systemCopernicus