Template:Infobox roentgenium

Roentgenium, ₁₁₁Rg
Roentgenium
Pronunciation	i/rʌntˈɡɛniəm/; (runt-GHEN-ee-əm); /rɛntˈɡɛniəm/; (rent-GHEN-ee-əm);
Appearance	silvery (predictit)
Mass number	[282]
Roentgenium in the periodic cairt
	darmstadtium ← roentgenium → copernicium
Atomic nummer (Z)	111
Group	group 11
Period	period 7
Block	d-block
Element category	Unkent chemical properties
Electron confeeguration	[Rn] 5f14 6d9 7s2 (predictit)
Electrons per shell	2, 8, 18, 32, 32, 17, 2 (predictit)
Pheesical properties
Phase at STP	solit (predicted)
Density (near r.t.)	28.7 g/cm3 (predictit)
Atomic properties
Oxidation states	(−1), (+1), (+3), (+5), (+7) (predicted)
Ionisation energies	1st: 1022.7 kJ/mol ; 2nd: 2074.4 kJ/mol ; 3rd: 3077.9 kJ/mol ; (more) (aw estimatit);
Atomic radius	empirical: 138 pm (predictit)
Covalent radius	121 pm (estimatit)
Ither properties
Naitural occurrence	synthetic
Creestal structur	body-centred cubic (bcc) ; (predictit)
CAS Nummer	54386-24-2
History
Namin	after Wilhelm Röntgen
Diskivery	Gesellschaft für Schwerionenforschung (1994)
Main isotopes o roentgenium
α (10%)	277Mt
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Check temperaturs Rg: na inpit for C, K, F.

References

↑ ^a ^b ^c Turler, A. (2004). "Gas Phase Chemistry of Superheavy Elements" (PDF). Journal of Nuclear and Radiochemical Sciences. 5 (2): R19–R25. doi:10.14494/jnrs2000.5.R19.
↑ ^a ^b ^c ^d ^e ^f ^g 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.
↑ ^a ^b Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11). Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104.
↑ ^a ^b ^c 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.
↑ Conradie, Jeanet; Ghosh, Abhik (15 Juin 2019). "Theoretical Search for the Highest Valence States of the Coinage Metals: Roentgenium Heptafluoride May Exist". Inorganic Chemistry. 2019 (58): 8735–8738. doi:10.1021/acs.inorgchem.9b01139.
↑ Chemical Data. Roentgenium - Rg, Royal Chemical Society
↑ Khuyagbaatar, J.; Yakushev, A.; Düllmann, Ch. E.; et al. (2014). "⁴⁸Ca+²⁴⁹Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying ²⁷⁰Db and Discovery of ²⁶⁶Lr". Physical Review Letters. 112 (17): 172501. doi:10.1103/PhysRevLett.112.172501.
↑ Oganessian, Yuri Ts.; Abdullin, F. Sh.; Alexander, C.; et al. (30 Mey 2013). "Experimental studies of the ²⁴⁹Bk + ⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt". Physical Review C. American Physical Society. 87 (054621). Bibcode:2013PhRvC..87e4621O. doi:10.1103/PhysRevC.87.054621.
↑ Oganessian, Yu. Ts.; et al. (2013). "Experimental studies of the ²⁴⁹Bk + ⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt". Physical Review C. 87 (5): 054621. Bibcode:2013PhRvC..87e4621O. doi:10.1103/PhysRevC.87.054621.

[e-conf-1] Turler, A. (2004). "Gas Phase Chemistry of Superheavy Elements" (PDF). Journal of Nuclear and Radiochemical Sciences. 5 (2): R19–R25. doi:10.14494/jnrs2000.5.R19.

[Haire-2] ↑ ^a ^b ^c ^d ^e ^f ^g 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.

[bcc-3] Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11). Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104.

[BFricke-4] 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.

[hepta-5] Conradie, Jeanet; Ghosh, Abhik (15 Juin 2019). "Theoretical Search for the Highest Valence States of the Coinage Metals: Roentgenium Heptafluoride May Exist". Inorganic Chemistry. 2019 (58): 8735–8738. doi:10.1021/acs.inorgchem.9b01139.

[rsc-6] Chemical Data. Roentgenium - Rg, Royal Chemical Society

[7] Khuyagbaatar, J.; Yakushev, A.; Düllmann, Ch. E.; et al. (2014). "⁴⁸Ca+²⁴⁹Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying ²⁷⁰Db and Discovery of ²⁶⁶Lr". Physical Review Letters. 112 (17): 172501. doi:10.1103/PhysRevLett.112.172501.

[2012e117-8] Oganessian, Yuri Ts.; Abdullin, F. Sh.; Alexander, C.; et al. (30 Mey 2013). "Experimental studies of the ²⁴⁹Bk + ⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt". Physical Review C. American Physical Society. 87 (054621). Bibcode:2013PhRvC..87e4621O. doi:10.1103/PhysRevC.87.054621.

[Mt-9] Oganessian, Yu. Ts.; et al. (2013). "Experimental studies of the ²⁴⁹Bk + ⁴⁸Ca reaction including decay properties and excitation function for isotopes of element 117, and discovery of the new isotope ²⁷⁷Mt". Physical Review C. 87 (5): 054621. Bibcode:2013PhRvC..87e4621O. doi:10.1103/PhysRevC.87.054621.

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