Roentgenium

Dari Wikipedia bahasa Indonesia, ensiklopedia bebas
Roentgenium,  111Rg
Sifat umum
Nama, simbolroentgenium, Rg
Pengucapan
  • /rontgènium/
  • /roèntgènium/
Penampilankeperakan (diprediksi)[1]
Roentgenium dalam tabel periodik
Hidrogen (diatomic nonmetal)
Helium (noble gas)
Litium (alkali metal)
Berilium (alkaline earth metal)
Boron (metalloid)
Karbon (polyatomic nonmetal)
Nitrogen (diatomic nonmetal)
Oksigen (diatomic nonmetal)
Fluorin (diatomic nonmetal)
Neon (noble gas)
Natrium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silikon (metalloid)
Fosforus (polyatomic nonmetal)
Belerang (polyatomic nonmetal)
Klorin (diatomic nonmetal)
Argon (noble gas)
Kalium (alkali metal)
Kalsium (alkaline earth metal)
Skandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Kromium (transition metal)
Mangan (transition metal)
Besi (transition metal)
Kobalt (transition metal)
Nikel (transition metal)
Tembaga (transition metal)
Seng (transition metal)
Galium (post-transition metal)
Germanium (metalloid)
Arsen (metalloid)
Selenium (polyatomic nonmetal)
Bromin (diatomic nonmetal)
Kripton (noble gas)
Rubidium (alkali metal)
Stronsium (alkaline earth metal)
Itrium (transition metal)
Zirkonium (transition metal)
Niobium (transition metal)
Molibdenum (transition metal)
Teknesium (transition metal)
Rutenium (transition metal)
Rodium (transition metal)
Paladium (transition metal)
Perak (transition metal)
Kadmium (transition metal)
Indium (post-transition metal)
Timah (post-transition metal)
Antimon (metalloid)
Telurium (metalloid)
Iodin (diatomic nonmetal)
Xenon (noble gas)
Sesium (alkali metal)
Barium (alkaline earth metal)
Lantanum (lanthanide)
Serium (lanthanide)
Praseodimium (lanthanide)
Neodimium (lanthanide)
Prometium (lanthanide)
Samarium (lanthanide)
Europium (lanthanide)
Gadolinium (lanthanide)
Terbium (lanthanide)
Disprosium (lanthanide)
Holmium (lanthanide)
Erbium (lanthanide)
Tulium (lanthanide)
Iterbium (lanthanide)
Lutesium (lanthanide)
Hafnium (transition metal)
Tantalum (transition metal)
Wolfram (transition metal)
Renium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platina (transition metal)
Emas (transition metal)
Raksa (transition metal)
Talium (post-transition metal)
Timbal (post-transition metal)
Bismut (post-transition metal)
Polonium (post-transition metal)
Astatin (metalloid)
Radon (noble gas)
Fransium (alkali metal)
Radium (alkaline earth metal)
Aktinium (actinide)
Torium (actinide)
Protaktinium (actinide)
Uranium (actinide)
Neptunium (actinide)
Plutonium (actinide)
Amerisium (actinide)
Kurium (actinide)
Berkelium (actinide)
Kalifornium (actinide)
Einsteinium (actinide)
Fermium (actinide)
Mendelevium (actinide)
Nobelium (actinide)
Lawrensium (actinide)
Ruterfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hasium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Kopernisium (transition metal)
Nihonium (unknown chemical properties)
Flerovium (post-transition metal)
Moskovium (unknown chemical properties)
Livermorium (unknown chemical properties)
Tenesin (unknown chemical properties)
Oganeson (unknown chemical properties)
Au

Rg

(Uhp)
darmstadtiumroentgeniumkopernisium
Nomor atom (Z)111
Golongangolongan 11
Periodeperiode 7
Blokblok-d
Kategori unsurtak diketahui, mungkin logam transisi
Nomor massa[282] (belum dikonfirmasi: 286)
Konfigurasi elektron[Rn] 5f14 6d9 7s2 (diprediksi)[1][2]
Elektron per kelopak2, 8, 18, 32, 32, 17, 2 (diprediksi)
Sifat fisik
Fase pada STS (0 °C dan 101,325 kPa)padat (diprediksi)[3]
Kepadatan mendekati s.k.22–24 g/cm3 (diprediksi)[4][5]
Sifat atom
Bilangan oksidasi(−1), (+1), (+3), (+5), (+7) (diprediksi)[2][6][7]
Energi ionisasike-1: 1020 kJ/mol
ke-2: 2070 kJ/mol
ke-3: 3080 kJ/mol
(artikel) (semuanya merupakan perkiraan)[2]
Jari-jari atomempiris: 138 pm (diprediksi)[2][6]
Jari-jari kovalen121 pm (diperkirakan)[8]
Lain-lain
Kelimpahan alamisintetis
Struktur kristalkubus berpusat badan (bcc)
Struktur kristal Body-centered cubic untuk roentgenium

(diprediksi)[3]
Nomor CAS54386-24-2
Sejarah
Penamaandari Wilhelm C. Röntgen
PenemuanGesellschaft für Schwerionenforschung (1994)
Isotop roentgenium yang utama
Iso­top Kelim­pahan Waktu paruh (t1/2) Mode peluruhan Pro­duk
272Rg sintetis 2 mdtk α 268Mt
274Rg sintetis 12 mdtk α 272Mt
278Rg sintetis 4 mdtk α 274Mt
279Rg[9] sintetis 0,09 dtk α 275Mt
SF
280Rg sintetis 4,6 dtk α 276Mt
281Rg[10][11] sintetis 17 dtk SF (90%)
α (10%) 277Mt
282Rg[12] sintetis 100 dtk α 278Mt
283Rg[13] sintetis 5,1 mnt? SF
286Rg[14] sintetis 10,7 mnt? α 282Mt
| referensi | di Wikidata
Roentgenium Konfigurasi elektron

Roentgenium Tentang suara ini pengucapan  (pengucapan: /rɛntˈgɛniəm/, /rʌntˈdʒɛniəm/)[15] 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.

Pranala luar[sunting | sunting sumber]

Referensi[sunting | sunting sumber]

  1. ^ a b Turler, A. (2004). "Gas Phase Chemistry of Superheavy Elements" (PDF). Journal of Nuclear and Radiochemical Sciences. 5 (2): R19–R25. 
  2. ^ a b c d 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-3). Dordrecht, The Netherlands. ISBN 978-1-4020-3555-5.  Teks " publisherSpringer Science+Business Media" akan diabaikan (bantuan)
  3. ^ a b Östlin, A.; Vitos, L. (2011). "First-principles calculation of the structural stability of 6d transition metals". Physical Review B. 84 (11): 113104. Bibcode:2011PhRvB..84k3104O. doi:10.1103/PhysRevB.84.113104. 
  4. ^ Gyanchandani, Jyoti; Sikka, S. K. (10 Mei 2011). "Physical properties of the 6 d -series elements from density functional theory: Close similarity to lighter transition metals". Physical Review B. 83 (17): 172101. Bibcode:2011PhRvB..83q2101G. doi:10.1103/PhysRevB.83.172101. 
  5. ^ Kratz; Lieser (2013). Nuclear and Radiochemistry: Fundamentals and Applications (edisi ke-3). hlm. 631. 
  6. ^ a b 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. Diakses tanggal 16 Juli 2022. 
  7. ^ Conradie, Jeanet; Ghosh, Abhik (15 Juni 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. PMID 31203606. 
  8. ^ Chemical Data. Roentgenium - Rg, Royal Chemical Society
  9. ^ http://www.jinr.ru/posts/both-neutron-properties-and-new-results-at-she-factory/
  10. ^ 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 (54621): 054621. Bibcode:2013PhRvC..87e4621O. doi:10.1103/PhysRevC.87.054621. 
  11. ^ 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. 
  12. ^ 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. Bibcode:2014PhRvL.112q2501K. doi:10.1103/PhysRevLett.112.172501. hdl:1885/148814. PMID 24836239. 
  13. ^ Hofmann, S.; Heinz, S.; Mann, R.; et al. (2016). "Remarks on the Fission Barriers of SHN and Search for Element 120". Dalam Peninozhkevich, Yu. E.; Sobolev, Yu. G. Exotic Nuclei: EXON-2016 Proceedings of the International Symposium on Exotic Nuclei. Exotic Nuclei. hlm. 155–164. doi:10.1142/9789813226548_0024. ISBN 9789813226555. 
  14. ^ Hofmann, S.; Heinz, S.; Mann, R.; et al. (2016). "Review of even element super-heavy nuclei and search for element 120". The European Physics Journal A. 2016 (52): 180. Bibcode:2016EPJA...52..180H. doi:10.1140/epja/i2016-16180-4. 
  15. ^ Roentgenium - Definitions from Dictionary.com