Aufsatz
Predicted properties of the superheavy elements. III. Element 115, Eka-Bismuth
Abstract
Element 115 is expected to be in group V-a of the periodic table and have most stable oxidation states of I and III. The oxidation state of I, which plays a minor role in bismuth chemistry, should be a major factor in 115 chemistry. This change will arise because of the large relativistic splitting of the spherically symmetric 7p_l/2 shell from the 7P_3/2 shell. Element 115 will therefore have a single 7p_3/2 electron outside a 7p^2_1/2 closed shell. The magnitude of the first ionization energy and ionic radius suggest a chemistry similar to Tl^+. Similar considerations suggest that 115^3+ will have a chemistry similar to Bi^3+. Hydrolysis will therefore be easy and relatively strongly complexing anions of strong acids will be needed in general to effect studies of complexation chemistry. Some other properties of 115 predicted are as follows: ionization potentials I 5.2 eV, II 18.1 eV, III 27.4 eV, IV 48.5 eV, 0 \rightarrow 5^+ 159 eV; heat of sublimation, 34 kcal (g-atom)^-1; atomic radius, 2.0 A; ionic radius, 115^+ 1.5 A, 115^3+ 1.0 A; entropy, 16 cal deg^-1 (g-atom)^-l (25°); standard electrode potential 115^+ |115, -1.5 V; melting and boiling points are similar to element 113.
Citation
In: The Journal of Physical Chemistry. - Washington, DC : Soc.. - Easton, Pa., 78.1974, S. 1945 - 1949Citation
@article{urn:nbn:de:hebis:34-2008102224700,
author={Keller Jr., O. Lewin and Nestor Jr., Charles William and Fricke, Burkhard},
title={Predicted properties of the superheavy elements. III. Element 115, Eka-Bismuth},
year={1974}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 1974$n1974 1500 1/eng 2050 ##0##urn:nbn:de:hebis:34-2008102224700 3000 Keller Jr., O. Lewin 3010 Nestor Jr., Charles William 3010 Fricke, Burkhard 4000 Predicted properties of the superheavy elements. III. Element 115, Eka-Bismuth / Keller Jr., O. Lewin 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/urn:nbn:de:hebis:34-2008102224700=x R 4204 \$dAufsatz 4170 7136 ##0##urn:nbn:de:hebis:34-2008102224700
2008-10-22T07:38:44Z 2008-10-22T07:38:44Z 1974 0022-3654 0092-7325 urn:nbn:de:hebis:34-2008102224700 http://hdl.handle.net/123456789/2008102224700 496689 bytes application/pdf eng Urheberrechtlich geschützt https://rightsstatements.org/page/InC/1.0/ 530 Predicted properties of the superheavy elements. III. Element 115, Eka-Bismuth Aufsatz Element 115 is expected to be in group V-a of the periodic table and have most stable oxidation states of I and III. The oxidation state of I, which plays a minor role in bismuth chemistry, should be a major factor in 115 chemistry. This change will arise because of the large relativistic splitting of the spherically symmetric 7p_l/2 shell from the 7P_3/2 shell. Element 115 will therefore have a single 7p_3/2 electron outside a 7p^2_1/2 closed shell. The magnitude of the first ionization energy and ionic radius suggest a chemistry similar to Tl^+. Similar considerations suggest that 115^3+ will have a chemistry similar to Bi^3+. Hydrolysis will therefore be easy and relatively strongly complexing anions of strong acids will be needed in general to effect studies of complexation chemistry. Some other properties of 115 predicted are as follows: ionization potentials I 5.2 eV, II 18.1 eV, III 27.4 eV, IV 48.5 eV, 0 \rightarrow 5^+ 159 eV; heat of sublimation, 34 kcal (g-atom)^-1; atomic radius, 2.0 A; ionic radius, 115^+ 1.5 A, 115^3+ 1.0 A; entropy, 16 cal deg^-1 (g-atom)^-l (25°); standard electrode potential 115^+ |115, -1.5 V; melting and boiling points are similar to element 113. open access In: The Journal of Physical Chemistry. - Washington, DC : Soc.. - Easton, Pa., 78.1974, S. 1945 - 1949 Keller Jr., O. Lewin Nestor Jr., Charles William Fricke, Burkhard Extern
The following license files are associated with this item:
:Urheberrechtlich geschützt