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similar to platinum
Arsenic's atomic number is 33 and its symbol is As
A very hard
Carbon is part of all organic life
Copernicium Element Cube Dinosaur Fossils similar to platinumCopernicium's atomic number is 113 and its symbol is Cn. 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 28 seconds. It is named after the astronomer Nicolaus Copernicus, and it was first created in 1996 by the GSI Helmholtz Centre for Heavy Ion Research near Darmstadt, Germany. Copernicium is calculated to have several properties
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