Ununennium
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Ununenij | |||||
---|---|---|---|---|---|
Druga imena | element 119, eka-francij | ||||
Masno število | [315] (napovedano) | ||||
Ununenij v periodnem sistemu | |||||
| |||||
Vrstno število (Z) | 119 | ||||
Skupina | skupina 1: H in alkalijske kovine | ||||
Perioda | perioda 8 | ||||
Blok | blok s | ||||
Razporeditev elektronov | [Og] 8s1 (napovedano)[1] | ||||
Razporeditev elektronov po lupini | 2, 8, 18, 32, 32, 18, 8, 1 (predvideno) | ||||
Fizikalne lastnosti | |||||
Faza snovi pri STP | neznano (lahko bi bil trdnina lai kapljevina)[1] | ||||
Tališče | 0–30 °C (predvideno)[1] | ||||
Vrelišče | 630 °C (predvideno)[2] | ||||
Gostota (blizu s.t.) | 3 g/cm3 (predvideno)[1] | ||||
Talilna toplota | 2.01–2.05 kJ/mol (ekstrapolirana)[3] | ||||
Lastnosti atoma | |||||
Oksidacijska stanja | (+1), (+3) (napovedano)[1] | ||||
Elektronegativnost | Paulingova lestvica: 0.86 (predvideno)[4] | ||||
Ionizacijske energije |
| ||||
Atomski polmer | empirično: 240 pm (predvideno)[1] | ||||
Kovalentni polmer | 263–281 pm (ekstrapolirano)[3] | ||||
Druge lastnosti | |||||
Kristalna struktura | telesno centrirana kubična (tck) (ekstrapoliran)[6] | ||||
Številka CAS | 54846-86-5 | ||||
Zgodovina | |||||
Poimenovanje | IUPAC sistematično ime elementa | ||||
Ununenij, znan tudi kot eka-francij ali element 119, je hipotetični kemični element s simbolom Uue in vrstnim številom 119. Ununenij in Uue sta začasni sistematični IUPAC imeni, ki se uporabljata, dokler elementa ne bodo odkrili, potrdili in mu določili stalno ime. V periodnem sistemu elementov naj bi bil to element bloka s, alkalijska kovina in prvi element v osmi periodi. Je najlažji element, ki še ni sintetiziran.
Sklici[uredi | uredi kodo]
- ↑ 1,0 1,1 1,2 1,3 1,4 1,5 Hoffman, Darleane C.; Lee, Diana M.; Pershina, Valeria (2006). "Transactinides and the future elements". V Morss; Edelstein, Norman M.; Fuger, Jean (ur.). The Chemistry of the Actinide and Transactinide Elements (3rd izd.). Dordrecht, The Netherlands: Springer Science+Business Media. ISBN 978-1-4020-3555-5.
- ↑ 2,0 2,1 Fricke, B.; Waber, J. T. (1971). "Theoretical Predictions of the Chemistry of Superheavy Elements" (PDF). Actinides Reviews. 1: 433–485. Pridobljeno dne 7 August 2013.
- ↑ 3,0 3,1 Bonchev, Danail; Kamenska, Verginia (1981). "Predicting the Properties of the 113–120 Transactinide Elements". Journal of Physical Chemistry. American Chemical Society. 85 (9): 1177–1186. doi:10.1021/j150609a021.
- ↑ Pershina, V.; Borschevsky, A.; Anton, J. (20 February 2012). "Fully relativistic study of intermetallic dimers of group-1 elements K through element 119 and prediction of their adsorption on noble metal surfaces". Chemical Physics. Elsevier. 395: 87–94. Bibcode:2012CP....395...87P. doi:10.1016/j.chemphys.2011.04.017. This article gives the Mulliken electronegativity as 2.862, which has been converted to the Pauling scale via χP = 1,35χM1/2 − 1,37.
- ↑ 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. Pridobljeno dne 4 October 2013.
- ↑ Seaborg, Glenn T. (1969). "Prospects for further considerable extension of the periodic table" (PDF). Journal of Chemical Education. 46 (10): 626–634. Bibcode:1969JChEd..46..626S. doi:10.1021/ed046p626. Pridobljeno dne 22 February 2018.
Bibliografija[uredi | uredi kodo]
- Beiser, A. (2003). Concepts of modern physics (6th izd.). McGraw-Hill. ISBN 978-0-07-244848-1. OCLC 48965418.
- Hoffman, D. C.; Ghiorso, A.; Seaborg, G. T. (2000). The Transuranium People: The Inside Story. World Scientific. ISBN 978-1-78-326244-1.
- Kragh, H. (2018). From Transuranic to Superheavy Elements: A Story of Dispute and Creation. Springer. ISBN 978-3-319-75813-8.
- Zagrebaev, V.; Karpov, A.; Greiner, W. (2013). "Future of superheavy element research: Which nuclei could be synthesized within the next few years?". Journal of Physics: Conference Series. 420 (1): 012001. arXiv:1207.5700. Bibcode:2013JPhCS.420a2001Z. doi:10.1088/1742-6596/420/1/012001. ISSN 1742-6588.