
Copernicium (Cn) is a chemical element of the periodic table, located in the group 12 and the period 7, and has the atomic number 112. It is named after the mathematician, Nicolaus Copernicus. It is a transuranium element and is counted as one of the radioactive elements.
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– d block |
FAQs on Copernicium Element
Copernicium |
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‣ Who discovered copernicium? When was copernicium discovered? Discovery: Gesellschaft für Schwerionenforschung (1996) |
‣ Where is copernicium on the periodic table?![]() Location: Copernicium is found in the seventh row of the periodic table, next to the roentgenium element. |
‣ What is the atomic number of copernicium? Atomic number (Z): 112 |
‣ What is the symbol of copernicium? Symbol: Cn |
‣ Copernicium atomic weight: [285] |
‣ What block is copernicium in the periodic table? Block: d-block |
‣ What group is copernicium in the periodic table? Group: 12 |
‣ What period is copernicium in the periodic table? Period: 7 |
‣ Copernicium atomic radius: calculated: 147 pm (predicted) |
‣ Copernicium covalent radius: 122 pm (estimated) |
‣ What is copernicium melting point? Melting point: 283 ± 11 K (10 ± 11 °C, 50 ± 20 °F) (predicted) |
‣ What is copernicium boiling point? Boiling point: 340 ± 10 K (67 ± 10 °C, 153 ± 18 °F) (predicted) |
‣ Copernicium triple point: 283 K, 25 kPa (predicted) |
‣ How many electron shells does copernicium have? Electrons per shell: 2, 8, 18, 32, 32, 18, 2 (predicted) |
‣ What is the full electron configuration for copernicium? Electron configuration: [Rn] 5f14 6d10 7s2 (predicted) |
‣ Copernicium ionization energies: 1st: 1155 kJ/mol 2nd: 2170 kJ/mol 3rd: 3160 kJ/mol (all estimated) |
‣ Is copernicium a liquid at room temperature? Phase (at r.t): liquid (predicted) |
‣ What is the density of the element copernicium? Density (near r.t): 14.0 g/cm3 (predicted) |
‣ Copernicium natural occurrence: synthetic |
‣ Copernicium oxidation state: 0, +1, +2 |
‣ Copernicium crystal structure: hexagonal close-packed (hcp) (predicted) |
‣ Copernicium CAS number: 54084-26-3 |
‣ How many isotopes does copernicium have?
Main isotopes of copernicium | ||||
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Isotope | Abundance | Half-life (t1/2) | Decay mode | Product |
277Cn | syn | 0.69 ms | α | 273Ds |
281Cn | syn | 0.18 s | α | 277Ds |
282Cn | syn | 0.91 ms | SF | |
283Cn | syn | 4.2 s | 90 % α 10 % SF EC? | 279Ds – 283Rg |
284Cn | syn | 98 ms | 98 % SF 2 % α | – 280Ds |
285Cn | syn | 28 s | α | 281Ds |
286Cn | syn | 8.45 s ? | SF | – |
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