Copernicium

Copernicium, ₀₀Cn

Copernicium
Pronunciation	/ˌkoʊpərˈnɪsiəm/ ​(KOH-pər-NISS-ee-əm)
Mass number	[285]
Copernicium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Hg ↑ Cn ↓ (Uhh) roentgenium ← copernicium → nihonium
Group	group 12
Period	period 7
Block	d-block
Electron configuration	[Rn] 5f14 6d10 7s2 (predicted)[1] (predicted)
Electrons per shell	2, 8, 18, 32, 32, 18, 2 (predicted)
Physical properties
Phase at STP	gas (predicted)
Boiling point	357+112 −108 K ​(84+112 −108 °C, ​183+202 −194 °F)[2]
Density when liquid (at m.p.)	23.7 g/cm3 (predicted)[1]
Atomic properties
Oxidation states	0, (+1), +2, (+4), (+6) (parenthesized: prediction)[1][3][4][5]
Ionization energies	1st: 1155 kJ/mol 2nd: 2170 kJ/mol 3rd: 3160 kJ/mol (more) (all estimated)[1]
Atomic radius	calculated: 147 pm[1][6] (predicted)
Covalent radius	122 pm (predicted)[7]
Other properties
Natural occurrence	synthetic
Crystal structure	​body-centered cubic (bcc) (predicted)[8]
CAS Number	54084-26-3
History
Naming	after Nicolaus Copernicus
Discovery	Gesellschaft für Schwerionenforschung (1996)
Isotopes of copernicium v e
Main isotopes[9] Decay abun­dance half-life (t1/2) mode pro­duct 283Cn synth 3.81 s[10] α96% 279Ds SF4% – ε? 283Rg Preview warning: Infobox Cn isotopes: Decay mode not recognised, input shown unedited "dm3=ε?" cat#D 285Cn synth 30 s α 281Ds 286Cn synth 8.4 s? SF –
Category: Copernicium view talk edit | references

Copernicium (formerly Ununbium) is a chemical element in the Periodic Table. It is also named eka-mercury. It has the symbol Cn. It has the atomic number 112. It is a transuranium element.

The element is named in honor of Nicolaus Copernicus.

Using periodic trends, people think that it will be a liquid metal like mercury. It is likely to be more volatile than mercury however.

1. ↑ ^{1.0 1.1 1.2 1.3 1.4 1.5} Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". In Morss; Edelstein, Norman M.; Fuger, Jean (eds.). The Chemistry of the Actinide and Transactinide Elements (3rd ed.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 978-1-4020-3555-5.
2. ↑ Eichler, R.; Aksenov, N. V.; Belozerov, A. V.; Bozhikov, G. A.; Chepigin, V. I.; Dmitriev, S. N.; Dressler, R.; Gäggeler, H. W.; et al. (2008). "Thermochemical and physical properties of element 112". Angewandte Chemie. 47 (17): 3262–6. doi:10.1002/anie.200705019. Retrieved 5 November 2013.
3. ↑ Gäggeler, Heinz W.; Türler, Andreas (2013). "Gas Phase Chemistry of Superheavy Elements". The Chemistry of Superheavy Elements. Springer Science+Business Media. pp. 415–483. doi:10.1007/978-3-642-37466-1_8. ISBN 978-3-642-37465-4. Retrieved 2018-04-21.
4. ↑ Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. Structure and Bonding. 21: 89–144. doi:10.1007/BFb0116498. ISBN 978-3-540-07109-9. Retrieved 4 October 2013.
5. ↑ Hu, Shu-Xian; Zou, Wenli (23 September 2021). "Stable copernicium hexafluoride (CnF₆) with an oxidation state of VI+". Physical Chemistry Chemical Physics. 2022 (24): 321–325. doi:10.1039/D1CP04360A. PMID 34889909.
6. ↑ Fricke, Burkhard (1975). "Superheavy elements: a prediction of their chemical and physical properties". Recent Impact of Physics on Inorganic Chemistry. 21: 89–144. doi:10.1007/BFb0116498. Retrieved 4 October 2013.
7. ↑ Chemical Data. Copernicium - Cn, Royal Chemical Society
8. ↑ Gyanchandani, Jyoti; Mishra, Vinayak; Dey, G. K.; Sikka, S. K. (January 2018). "Super heavy element Copernicium: Cohesive and electronic properties revisited". Solid State Communications. 269: 16–22. doi:10.1016/j.ssc.2017.10.009. Retrieved 28 March 2018.
9. ↑ Kondev, F. G.; Wang, M.; Huang, W. J.; Naimi, S.; Audi, G. (2021). "The NUBASE2020 evaluation of nuclear properties" (PDF). Chinese Physics C. 45 (3): 030001. doi:10.1088/1674-1137/abddae.
10. ↑ Oganessian, Yu. Ts.; Utyonkov, V. K.; Ibadullayev, D.; et al. (2022). "Investigation of ⁴⁸Ca-induced reactions with ²⁴²Pu and ²³⁸U targets at the JINR Superheavy Element Factory". Physical Review C. 106 (24612). Bibcode:2022PhRvC.106b4612O. doi:10.1103/PhysRevC.106.024612. S2CID 251759318.
11. ↑ Soverna S 2004, 'Indication for a gaseous element 112,' in U Grundinger (ed.), GSI Scientific Report 2003, GSI Report 2004-1, p. 187, ISSN 0174-0814
12. ↑ Utyonkov, V. K.; Brewer, N. T.; Oganessian, Yu. Ts.; Rykaczewski, K. P.; Abdullin, F. Sh.; Dimitriev, S. N.; Grzywacz, R. K.; Itkis, M. G.; Miernik, K.; Polyakov, A. N.; Roberto, J. B.; Sagaidak, R. N.; Shirokovsky, I. V.; Shumeiko, M. V.; Tsyganov, Yu. S.; Voinov, A. A.; Subbotin, V. G.; Sukhov, A. M.; Karpov, A. V.; Popeko, A. G.; Sabel'nikov, A. V.; Svirikhin, A. I.; Vostokin, G. K.; Hamilton, J. H.; Kovrinzhykh, N. D.; Schlattauer, L.; Stoyer, M. A.; Gan, Z.; Huang, W. X.; Ma, L. (30 January 2018). "Neutron-deficient superheavy nuclei obtained in the ²⁴⁰Pu+⁴⁸Ca reaction". Physical Review C. 97 (14320): 1–10. Bibcode:2018PhRvC..97a4320U. doi:10.1103/PhysRevC.97.014320.
13. ↑ Chart of Nuclides. Brookhaven National Laboratory