?????????????

????????????? ₁₁₁Rg
?????? ?????????????
????? ???????	?????????????, Rg
?????	silvery (predicted)
?????????????????????? ?????????????
	???????????? ← ????????????? → ?????????????
?????? ???????? (Z)	111
??????? ?????	group 11
???????????????????	period 7
??????? ????	but probably a transition metal
?? ????????? ????????? (Ar)
?????????? ??????????	[Rn] 5f14 6d9 7s2 (predicted)
????????????? ??????????????????	2, 8, 18, 32, 32, 17, 2 (predicted)
????????????????? ?????????????
?????	????????? (predicted)
??????????? (?????????????)	28.7 g/cm3 (predicted)
????????? ???????????
??????????????????????????	1st: 1020 kJ/mol ; 2nd: 2070 kJ/mol ; 3rd: 3080 kJ/mol ; (more) (all estimated)
????????? ?????????	empirical: 138 pm (predicted)
???????????????????	121 pm (estimated)
Miscellanea
?????????? ???????????	?body-centered cubic (bcc) ; (predicted)
CAS Number	54386-24-2
??????????????
????????????	after Wilhelm R?ntgen
????????????????	Gesellschaft für Schwerionenforschung (1994)
????????????? ?????????????? ????????????????
	???????????? \| ????????; ????????; ???????; \| ???????

????????????? (Roentgenium) ??? ??????????????????? (periodic table) ? ?????????????????????? column ???????? ?? ??? gold ?????????????? ?????????? ??????????????? Rg ???????? ?????????????? (atomic number) ??? ???????? ???????????? ????????????? ??????????????? 280Rg ???????? ????? ?????????? (half-life) ??? ~4 second ???????? ??????????? ???????? ???????????????? ??????????????????? ????????????????? ??????????? ???????????????????????????? ???????????????????????????

???????????? ??????? X-Rays ??????????????? Wilhelm R?ntgen ?????????? ????????????????????????

?????????????

?????????????????????? ?????????????????????? ???????????????? ???????????????????????????

????????????????????????

?????????????? ????????????????????? ????????????????????? ?????????????????????????????? ????????????????

????????????????????????????????

?????????????? ?????????????????????? ???????? ??????????????????????? ???????????????? ????????????????????????? ???????????????????????????? ??????????????????????? ?????????? ??????????????????????????????????????????????

??????????????????????????????

Roentgenium ??????????????????(half-life)??? ?.? ??????????????? ?????????????????? ?????????????? ?????????????????????????????? ??????????????????????????

???????

↑ ^?.? ^?.? Turler, A. (2004). "Gas Phase Chemistry of Superheavy Elements". Journal of Nuclear and Radiochemical Sciences 5 (2): R19–R25. doi:10.14494/jnrs2000.5.R19.
↑ ^?.? ^?.? ^?.? ^?.? ??????? ????? - Invalid <ref> tag; no text was provided for refs named Haire
↑ ^?.? ^?.? "First-principles calculation of the structural stability of 6d transition metals" (2011). Physical Review B 84 (11). doi:10.1103/PhysRevB.84.113104. Bibcode: 2011PhRvB..84k3104O.
↑ "Superheavy elements: a prediction of their chemical and physical properties" (1975). Recent Impact of Physics on Inorganic Chemistry 21: 89–144. doi:10.1007/BFb0116498. Retrieved on 4 October 2013.
↑ Chemical Data. Roentgenium - Rg, Royal Chemical Society
↑ "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" (2025-08-05). Physical Review C 87. American Physical Society. doi:10.1103/PhysRevC.87.054621. Bibcode: 2013PhRvC..87e4621O.
↑ "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" (2013). Physical Review C 87 (5): 054621. doi:10.1103/PhysRevC.87.054621. Bibcode: 2013PhRvC..87e4621O.
↑ "⁴⁸Ca+²⁴⁹Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying ²⁷⁰Db and Discovery of ²⁶⁶Lr" (2014). Physical Review Letters 112 (17): 172501. doi:10.1103/PhysRevLett.112.172501. PMID 24836239. Bibcode: 2014PhRvL.112q2501K.
↑ Hofmann? S.; Heinz? S.; Mann? R.; et al. (2016)? "Remarks on the Fission Barriers of SHN and Search for Element 120"? in Peninozhkevich? Yu. E.; Sobolev? Yu. G. (eds.)? Exotic Nuclei: EXON-2016 Proceedings of the International Symposium on Exotic Nuclei? Exotic Nuclei? pp. 155–164? doi:10.1142/9789813226548_0024? ISBN 9789813226555? Cite uses deprecated parameter |displayauthors= (??????)
↑ Hofmann, S. (2016). "Review of even element super-heavy nuclei and search for element 120". The European Physics Journal A 2016 (52). doi:10.1140/epja/i2016-16180-4. Bibcode: 2016EPJA...52..180H.

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

[Haire-2] ?.? ^?.? ^?.? ^?.? ??????? ????? - Invalid <ref> tag; no text was provided for refs named Haire

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

[BFricke-4] "Superheavy elements: a prediction of their chemical and physical properties" (1975). Recent Impact of Physics on Inorganic Chemistry 21: 89–144. doi:10.1007/BFb0116498. Retrieved on 4 October 2013.

[rsc-5] Chemical Data. Roentgenium - Rg, Royal Chemical Society

[2012e117-6] "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" (2025-08-05). Physical Review C 87. American Physical Society. doi:10.1103/PhysRevC.87.054621. Bibcode: 2013PhRvC..87e4621O.

[Mt-7] "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" (2013). Physical Review C 87 (5): 054621. doi:10.1103/PhysRevC.87.054621. Bibcode: 2013PhRvC..87e4621O.

[8] "⁴⁸Ca+²⁴⁹Bk Fusion Reaction Leading to Element Z=117: Long-Lived α-Decaying ²⁷⁰Db and Discovery of ²⁶⁶Lr" (2014). Physical Review Letters 112 (17): 172501. doi:10.1103/PhysRevLett.112.172501. PMID 24836239. Bibcode: 2014PhRvL.112q2501K.

[EXON-9] Hofmann? S.; Heinz? S.; Mann? R.; et al. (2016)? "Remarks on the Fission Barriers of SHN and Search for Element 120"? in Peninozhkevich? Yu. E.; Sobolev? Yu. G. (eds.)? Exotic Nuclei: EXON-2016 Proceedings of the International Symposium on Exotic Nuclei? Exotic Nuclei? pp. 155–164? doi:10.1142/9789813226548_0024? ISBN 9789813226555? Cite uses deprecated parameter |displayauthors= (??????)

[Hofmann2016-10] Hofmann, S. (2016). "Review of even element super-heavy nuclei and search for element 120". The European Physics Journal A 2016 (52). doi:10.1140/epja/i2016-16180-4. Bibcode: 2016EPJA...52..180H.

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