copernicium
Sign in to saveCopernicium is a synthetic chemical element; it has symbol Cn and atomic number 112. Its known isotopes are extremely radioactive, and have only been created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 30 seconds. Copernicium was first created in February 1996 by the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany. It was named after the astronomer Nicolaus Copernicus on his 537th anniversary.
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Copernicium is a human-made chemical element (symbol Cn, atomic number 112) that has only ever been created in laboratories and exists only in extremely unstable, radioactive forms. The element was first produced in Germany in 1996 and was named in honor of the astronomer Nicolaus Copernicus, though its most stable form lasts only about 30 seconds before decaying.
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Article
15 sectionsContents
- Introduction
- History
- Discovery
- Naming
- Isotopes
- Half-lives
- Predicted properties
- Chemical
- Physical and atomic
- Experimental atomic gas phase chemistry
- See also
- Notes
- References
- Bibliography
- External links
Copernicium is a synthetic chemical element; it has symbol Cn and atomic number 112. Its known isotopes are extremely radioactive, and have only been created in a laboratory. The most stable known isotope, copernicium-285, has a half-life of approximately 30 seconds. Copernicium was first created in February 1996 by the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany. It was named after the astronomer Nicolaus Copernicus on his 537th anniversary.
In the periodic table of the elements, copernicium is a d-block transactinide element and a group 12 element. During reactions with gold, it has been shown to be an extremely volatile element, so much so that it is possibly a gas or a volatile liquid at standard temperature and pressure.