Roentgenium

Roentgenium, ₁₁₁Rg
Sifat umum
Nama, simbol	roentgenium, Rg
Pengucapan	/rʌntˈɡɛniəm/ ( simak) atau /rɛntˈɡɛniəm/ ; runt-GEN-ee-əm atau rent-GEN-ee-əm
Penampilan	keperakan (prediksi)
Roentgenium di tabel periodik
	darmstadtium ← roentgenium → kopernisium
Nomor atom (Z)	111
Golongan, blok	golongan 11, blok-d
Periode	periode 7
Kategori unsur	unknown, mungkin logam transisi
Bobot atom standar (Ar)	[282]
Konfigurasi elektron	[Rn] 5f14 6d9 7s2 (prediksi)
per kelopak	2, 8, 18, 32, 32, 17, 2 (prediksi)
Sifat fisika
Fase	solid (prediksi)
Kepadatan mendekati s.k.	28.7 g/cm3 (prediksi)
Sifat atom
Bilangan oksidasi	5, 3, 1, −1 (prediksi)
Energi ionisasi	ke-1: 1022.7 kJ/mol ; ke-2: 2074.4 kJ/mol ; ke-3: 3077.9 kJ/mol ; (artikel) (semua perkiraan)
Jari-jari atom	empiris: 138 pm (prediksi)
Jari-jari kovalen	121 pm (perkiraan)
Lain-lain
Struktur kristal	kubus berpusat badan (bcc) ; (prediksi)
Nomor CAS	54386-24-2
Sejarah
Penamaan	Wilhelm Röntgen
Penemuan	Gesellschaft für Schwerionenforschung (1994)
Isotop roentgenium terstabil
α (10%)	277Mt
	lihat; bicara; sunting; \| referensi \| di Wikidata

Roentgenium pengucapan (bantuan·info) (pengucapan: /rɛntˈgɛniəm/, /rʌntˈdʒɛniəm/)^[9] adalah unsur kimia sintetik dalam sistem periodik unsur yang memiliki lambang Rg dan nomor atom 111. Roentgenium adalah unsur sintetis yang sangat radioaktif yang dapat dibuat di laboratorium tetapi tidak ditemukan di alam.²⁸²Rg, memiliki waktu paruh 2,1 menit. Roentgenium pertama kali dibuat pada tahun 1994 oleh GSI Helmholtz Centre for Heavy Ion Research dekat Darmstadt, Jerman. Namanya diambil dari nama Wilhelm Röntgen, seorang fisikawan yang menemukan sinar-X.

Roentgenium Konfigurasi elektron

Pranala luarSunting

ReferensiSunting

^ ^a ^b Turler, A. (2004). "Gas Phase Chemistry of Superheavy Elements" (PDF). Journal of Nuclear and Radiochemical Sciences. 5 (2): R19–R25.
^ ^a ^b ^c ^d ^e Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". Dalam Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (edisi ke-3rd). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1.
^ ^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 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. Diakses tanggal 4 October 2013.
^ 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. (2013-05-30). "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.
^ Roentgenium - Definitions from Dictionary.com

Artikel bertopik kimia ini adalah sebuah rintisan. Anda dapat membantu Wikipedia dengan mengembangkannya.

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

[Haire-2] Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". Dalam Morss; Edelstein, Norman M.; Fuger, Jean. The Chemistry of the Actinide and Transactinide Elements (edisi ke-3rd). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 1-4020-3555-1.

[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. Diakses tanggal 4 October 2013.

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

[6] 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.

[2012e117-7] Oganessian, Yuri Ts.; Abdullin, F. Sh.; Alexander, C.; et al. (2013-05-30). "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-8] 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.

[9] Roentgenium - Definitions from Dictionary.com

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