Photo-induced valence-number changes and defects in Eu2O3fine particle films

Abstract Recent X-ray diffraction data on molten noble and transition metals have been used to calculate effective interionic potentials by means of the Born-Green equation. The results on the noble metals are compared with the generalized pseudopotential calculations of Moriarty. In all cases the potentions were found to be insensitive to temperature and to have long-range oscillations. The results suggest that the effective valence number is close to unity in these molten metals, this giving reasonable values of the electrical resistivity when calculated in the framework of the usual Ziman theory.The self-diffusion coefficients, viscosities and surface tensions were calculated from the poten-tials and radial distribution functions using the kinetic theory of fluids. Adequate agreement with experimental data was obtained.

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The preferred valence states of transition metals

Australian Journal of Chemistry ◽

10.1071/ch9640833 ◽

1964 ◽

Vol 17 (8) ◽

pp. 833 ◽

Cited By ~ 6

Author(s):

JC Sheldon

Keyword(s):

Transition Metal ◽

Transition Metals ◽

Heat Of Formation ◽

Valence States ◽

Elementary Transition ◽

Binary Compounds ◽

Transition Metal Fluorides ◽

D Orbitals ◽

Related Compounds ◽

Valence Number

It is proposed that the valence number, n, for bonding in the elemental state may be estimated by n = rΔHf�/C, where r is half the interatomic distance, -ΔHf� is the heat of formation of the elemental state, and C is a constant and approximately 28 and 40 Ǻ kcal g-atom-1 for non-metals and metals respectively. It is shown that the valence states of the elementary transition metals, as given by n, correspond closely to the most stable oxidation states (MSOS) displayed in binary transition metal fluorides, chlorides, and related compounds. It is concluded that the trend of the MSOS of transition metal binary compounds results mainly from each metal possessing a preferred valence state, which is strongly determined by the availability of the (n-l)d orbitals for bonding as judged by their size relative to that of the ns and p orbitals.

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dependence of valence number of Co in LaGaO and its influence on partial electronic and oxide ionic conductivity

Solid State Ionics ◽

10.1016/j.ssi.2004.07.045 ◽

2004 ◽

Vol 173 (1-4) ◽

pp. 9-15 ◽

Cited By ~ 15

Author(s):

T ISHIHARA ◽

S ISHIKAWA ◽

M ANDO ◽

H NISHIGUCHI ◽

Y TAKITA

Keyword(s):

Ionic Conductivity ◽

Oxide Ionic Conductivity ◽

Valence Number

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Variable Valence Number

Transactions of the Kansas Academy of Science ◽

10.2307/3625857 ◽

1946 ◽

Vol 49 (2) ◽

pp. 185

Author(s):

Harry H. Sisler

Keyword(s):

Variable Valence ◽

Valence Number

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Antibiotic activity of organic compounds and their average quasi-valence number

Cellular and Molecular Life Sciences ◽

10.1007/bf01937005 ◽

1978 ◽

Vol 34 (5) ◽

pp. 633-635 ◽

Cited By ~ 5

Author(s):

V. Ajdačić ◽

V. Veljković

Keyword(s):

Organic Compounds ◽

Antibiotic Activity ◽

Valence Number

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Cytostatic activity of organic compounds and their average quasi-valence number

Cellular and Molecular Life Sciences ◽

10.1007/bf01937008 ◽

1978 ◽

Vol 34 (5) ◽

pp. 639-641 ◽

Cited By ~ 4

Author(s):

V. Veljković ◽

V. Ajdačić

Keyword(s):

Organic Compounds ◽

Cytostatic Activity ◽

Valence Number

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The quark–gluon phase in strong interacting matter

Canadian Journal of Physics ◽

10.1139/p82-110 ◽

1982 ◽

Vol 60 (6) ◽

pp. 797-801 ◽

Cited By ~ 1

Author(s):

R. Gagnon

Keyword(s):

Phase Transition ◽

Phase Transitions ◽

Critical Temperature ◽

Chemical Equilibrium ◽

Hadronic Phase ◽

Chemical Potentials ◽

Valence Number

A system of free quarks and gluons in thermal and in chemical equilibrium has been investigated in the context of hadronic phase transitions. The dependence on temperature of various quantities (i.e., chemical potentials and number and energy densities) was obtained. Calculations of number and energy densities at a given critical temperature have been performed for different valence number densities. A brief discussion of a phase transition occurring in the laboratory is also given.

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