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The heaviest element yet known is now officially named "Copernicium," after the astronomer Nicolaus Copernicus.
Copernicum has the atomic number 112 - this number denotes the number of protons in the nucleus of an atom. It is 277 times heavier than hydrogen, making it the heaviest element officially recognized by international union for chemistry IUPAC.
On the periodic table of elements, Copernicium will have the symbol "Cn." The team had originally suggested "Cp" as the element's symbol, but because this abbreviation has other uses in science (such as a material's specific heat), the team agreed to "Cn."
Copernicium (Cn) has no stable isotopes. A standard atomic mass cannot be given.