Oganeson

Nangangailangan ang artikulo o seksiyon na ito ng pagwawasto sa balarila, estilo, pagkakaisa, tono o baybay. Maaari kang makatulong sa pamamagitan ng pagbabago nito ngayon. (Hunyo 2009)

Oganesson, ₁₁₈Og

Oganesson
Bigkas	/ˌɒɡəˈnɛsɒn/[1] (OG-ə-NESS-on) /ˌoʊɡəˈnɛsən/[2] (OH-gə-NESS-ən)
Appearance	metallic (predicted)
Bilang na pangmasa	[294]
Oganesson sa talahanayang peryodiko
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 Rn ↑ Og ↓ — tennessine ← oganesson → ununennium
Atomikong bilang (Z)	118
Group	18
Period	7
Block	p-block
Electron configuration	[Rn] 5f14 6d10 7s2 7p6 (predicted)[3][4]
Electrons per shell	2, 8, 18, 32, 32, 18, 8 (predicted)
Physical properties
Phase at STP	solid (predicted)[5]
Melting point	325 ± 15 K ​(52 ± 15 °C, ​125 ± 27 °F) (predicted)[5]
Boiling point	450 ± 10 K ​(177 ± 10 °C, ​350 ± 18 °F) (predicted)[5]
Density (near r.t.)	7.2 g/cm3 (solid, 319 K, calculated)[5]
when liquid (at m.p.)	6.6 g/cm3 (liquid, 327 K, calculated)[5]
Atomic properties
Oxidation states	(−1),[4] (0), (+1),[6] (+2),[7] (+4),[7] (+6)[4] (nahulaaan)
Ionization energies	1st: 860 kJ/mol (calculated)[8] 2nd: 1560 kJ/mol (calculated)[8]
Atomic radius	empirical: 152 pm (predicted)[9]
Covalent radius	157 pm (predicted)[10]
Other properties
Natural occurrence	sintetiko
Crystal structure	​face-centered cubic (fcc) (extrapolated)[11]
CAS Number	54144-19-3
History
Naming	after Yuri Oganessian
Prediction	Hans Peter Jørgen Julius Thomsen (1895)
Discovery	Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory (2002)
Isotopes of oganesson t b
Main isotopes[12] Decay abun­dance half-life (t1/2) mode pro­duct 294Og synth 0.7 ms[13][14] α 290Lv SF –
Kategorya: Oganesson tingnan usapan baguhin | references

Ang oganeso na kilala rin bilang eka-radon o element 118, ay ang pangalang IUPAC para sa transaktinidong elemento na may atomikong bilang na 118. Ito ay nagkaroon ng pansamantalang pangalang ununoctium /u·nun·ok·tyum/ at pansamantalang elementong simbolong Uuo.^[15] Sa talaang peryodiko, ito ay isang element sa p-block at ang huli sa ika-7ng period. Ang oganeso ay kasalukuyang nag-iisang synthetic member ng group 18 at ang may pinakamataas na atomic number at may pinakamataas na masa sa lahat ng nadiskubreng elemento.

Ang radioactive atom ng oganeso ay pabagu-bago, at mula noong 2002, tanging tatlong atom ng isotope ²⁹⁴Og lang ang nakita.^[16] Kahit na ito ay pinapayagan sa mga maliliit na experimentong karakterisasyon ng mga katangian at compounds nito, may mga kalkulasyon na ginagamit para sa prediksiyon, kasama na ang mga hindi inaasahan. Halimbawa, bagama't ang ununoktio ay isang kasapi ng noble gas group, ito ay maaaring magkaroon ng isang mas mataas na reksiyong kimiko kaysa sa ilang mga elemento sa labas sa grupo na ito.^[17] Ito ay ang dating-iniisip na isang gas ngunit ngayon ay hinuhulaan na maging isang semimetallic solid sa ilalim ng normal na kalagayan.^[17]

1. ↑ Oganesson. The Periodic Table of Videos. University of Nottingham. December 15, 2016.
2. ↑ Ritter, Malcolm (June 9, 2016). "Periodic table elements named for Moscow, Japan, Tennessee". Associated Press. Nakuha noong December 19, 2017.
3. ↑ Nash, Clinton S. (2005). "Atomic and Molecular Properties of Elements 112, 114, and 118". Journal of Physical Chemistry A. 109 (15): 3493–3500. Bibcode:2005JPCA..109.3493N. doi:10.1021/jp050736o. PMID 16833687.
4. ↑ ^{4.0 4.1 4.2} Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". Sa Morss; Edelstein, Norman M.; Fuger, Jean (mga pat.). The Chemistry of the Actinide and Transactinide Elements (sa wikang Ingles) (ika-3rd (na) edisyon). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 978-1-4020-3555-5.
5. ↑ ^{5.0 5.1 5.2 5.3 5.4} Smits, Odile; Mewes, Jan-Michael; Jerabek, Paul; Schwerdtfeger, Peter (2020). "Oganesson: A Noble Gas Element That Is Neither Noble Nor a Gas". Angew. Chem. Int. Ed. 59 (52): 23636–23640. doi:10.1002/anie.202011976. PMC 7814676. PMID 32959952.
6. ↑ Han, Young-Kyu; Bae, Cheolbeom; Son, Sang-Kil; Lee, Yoon Sup (2000). "Spin–orbit effects on the transactinide p-block element monohydrides MH (M=element 113–118)". Journal of Chemical Physics (sa wikang Ingles). 112 (6): 2684. Bibcode:2000JChPh.112.2684H. doi:10.1063/1.480842.
7. ↑ ^{7.0 7.1} Kaldor, Uzi; Wilson, Stephen (2003). Theoretical Chemistry and Physics of Heavy and Superheavy Elements (sa wikang Ingles). Springer. p. 105. ISBN 978-1402013713. Nakuha noong 2008-01-18.
8. ↑ ^{8.0 8.1} Guo, Yangyang; Pašteka, Lukáš F.; Eliav, Ephraim; Borschevsky, Anastasia (2021). "Chapter 5: Ionization potentials and electron affinity of oganesson with relativistic coupled cluster method". Sa Musiał, Monika; Hoggan, Philip E. (mga pat.). Advances in Quantum Chemistry. Bol. 83. pp. 107–123. ISBN 978-0-12-823546-1.
9. ↑ Oganesson, American Elements
10. ↑ Oganesson - Element information, properties and uses, Royal Chemical Society
11. ↑ Grosse, A. V. (1965). "Some physical and chemical properties of element 118 (Eka-Em) and element 86 (Em)". Journal of Inorganic and Nuclear Chemistry. 27 (3). Elsevier Science Ltd.: 509–19. doi:10.1016/0022-1902(65)80255-X.
12. ↑ 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.
13. ↑ Oganessian, Yu. Ts.; Utyonkov, V. K.; Lobanov, Yu. V.; Abdullin, F. Sh.; Polyakov, A. N.; Sagaidak, R. N.; Shirokovsky, I. V.; Tsyganov, Yu. S.; atbp. (2006-10-09). "Synthesis of the isotopes of elements 118 and 116 in the ²⁴⁹Cf and ²⁴⁵Cm+⁴⁸Ca fusion reactions". Physical Review C. 74 (4): 044602. Bibcode:2006PhRvC..74d4602O. doi:10.1103/PhysRevC.74.044602. Nakuha noong 2008-01-18.
14. ↑ Oganessian, Yuri Ts.; Rykaczewski, Krzysztof P. (August 2015). "A beachhead on the island of stability". Physics Today. 68 (8): 32–38. Bibcode:2015PhT....68h..32O. doi:10.1063/PT.3.2880. OSTI 1337838.
15. ↑ Weiser, M.E. Atomic weights of the elements 2005 (IUPAC Technical Report), Pure and Applied Chemistry, 2006, tomo 78, isyung 11, mga pahinang 2051–2066.
16. ↑ "The Top 6 Physics Stories of 2006". Discover Magazine. 2007-01-07. Nakuha noong 2008-01-18.
17. ↑ ^{17.0 17.1} Clinton S. Nash (2005). "Atomic and Molecular Properties of Elements 112, 114, and 118". J. Phys. Chem. A. 109 (15): 3493–3500. Nakuha noong 2008-01-18.