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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…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Copernicium | 283Cn | synth | 1.00 | infobox |
| Copernicium | 285Cn | synth | 1.00 | infobox |
| Copernicium | 286Cn | synth | 1.00 | infobox |
| Copernicium | Atomic number (Z) | 112 | 1.00 | infobox |
| Copernicium | Atomic radius | calculated: 147 pm (predicted) | 1.00 | infobox |
| Copernicium | Block | d-block | 1.00 | infobox |
| Copernicium | Boiling point | 340 ± 10 K (67 ± 10 °C, 153 ± 18 °F) (predicted) | 1.00 | infobox |
| Copernicium | CAS Number | 54084-26-3 | 1.00 | infobox |
| Copernicium | Covalent radius | 122 pm (predicted) | 1.00 | infobox |
| Copernicium | Crystal structure | hexagonal close-packed (hcp) (predicted) | 1.00 | infobox |
| Copernicium | Density (near r.t.) | 14.0 g/cm3 (predicted) | 1.00 | infobox |
| Copernicium | Discovery | Gesellschaft für Schwerionenforschung (1996) | 1.00 | infobox |
| Copernicium | Electron configuration | [Rn] 5f14 6d10 7s2 (predicted) | 1.00 | infobox |
| Copernicium | Electrons per shell | 2, 8, 18, 32, 32, 18, 2 (predicted) | 1.00 | infobox |
| Copernicium | Group | group 12 | 1.00 | infobox |
| Copernicium | Ionization energies | 1st: 1155 kJ/mol | 1.00 | infobox |
| Copernicium | Ionization energies | 2nd: 2170 kJ/mol | 1.00 | infobox |
| Copernicium | Ionization energies | 3rd: 3160 kJ/mol | 1.00 | infobox |
| Copernicium | Ionization energies | (more) (all estimated) | 1.00 | infobox |
| Copernicium | Main isotopes | .mw-parser-output .isotopes-table{text-align:center;width:100%;border-collapse:collapse;margin:0;padding:0}.mw-parser-output .isotopes-table-headers>:not(:first-child){padding:0… | 1.00 | infobox |
| Copernicium | Melting point | 283 ± 11 K (10 ± 11 °C, 50 ± 20 °F) (predicted) | 1.00 | infobox |
| Copernicium | Naming | after Nicolaus Copernicus | 1.00 | infobox |
| Copernicium | Natural occurrence | synthetic | 1.00 | infobox |
| Copernicium | Oxidation states | common: (none) +2 (+2), (+4) | 1.00 | infobox |
| Copernicium | Period | period 7 | 1.00 | infobox |
| Copernicium | Phase .mw-parser-output .nobold{font-weight:normal}at STP | liquid (predicted) | 1.00 | infobox |
| Copernicium | Pronunciation | /ˌkoʊpərˈnɪsiəm/ ⓘ (KOH-pər-NISS-ee-əm) | 1.00 | infobox |
| Copernicium | Triple point | 283 K, 25 kPa (predicted) | 1.00 | infobox |
| Copernicium | is a | synthetic chemical element | 0.90 | text |
| Copernicium | is a | d-block transactinide element and a group 12 element | 0.90 | text |
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