Chapter

Superheavy elements a prediction of their chemical and physical properties

12/2007; DOI:10.1007/BFb0116498
0 0
 · 
0 Bookmarks
 · 
680 Views
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: A closer look: A deeper theoretical understanding of the multifaceted periodic system of elements (PSE) has been achieved in recent years. The large energy gaps above the noble gas shells 1s(2) and np(6) (n=2-6) impress periodicity onto the whole PSE, which is complete with Period 7. The electron configurations of unbound atoms are chemically misleading. The common n+l rule is an example of the "invention of facts" even in the hard sciences.
    Angewandte Chemie International Edition 03/2009; 48(19):3404-15. · 13.73 Impact Factor
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: Basic questions on the periodic system (PS) of chemical elements are still under discussion. Several common misconceptions will be resolved. The word “chemical element” comprises more than two concepts. The PS can be rationalized on a quantum chemical basis, namely with the aid of four concepts: (1) electron configurations of bonded atoms, (2) realistic sequences of orbital energies, (3) spatial extension of valence and Rydberg orbitals, and (4) energy gaps above the closed 1s2 and np6 shells (n = 2–6). The PS of known elements cannot be naively extrapolated. The common discussion of the PS in textbooks of general, inorganic, and physical chemistry needs revision. © 2009 Wiley Periodicals, Inc. Int J Quantum Chem, 2010
    International Journal of Quantum Chemistry 09/2009; 110(8):1455 - 1465. · 1.31 Impact Factor
  • Source
    [show abstract] [hide abstract]
    ABSTRACT: a b s t r a c t The electron affinity (EA) of element 114 is calculated by the mixed sector intermediate Hamiltonian cou-pled cluster method, using large basis sets and model spaces. Similar calculations reproduce the EA of the lighter homologues Sn and Pb within 5%. This good agreement lends credence to the result obtained for element 114, predicting that the superheavy element will have no electron affinity and will not bind an extra electron. Trends in group 14 and the relativistic destabilization of the E114 7p 3=2 orbital support this conclusion.
    Chemical Physics Letters 01/2009; 480(1-3):49-51. · 2.15 Impact Factor

Full-text (2 Sources)

View
207 Downloads
Available from
Apr 30, 2013