Topic
Valency
About: Valency is a research topic. Over the lifetime, 1632 publications have been published within this topic receiving 26141 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: The ground states of C2 (3IIu) and O 2 (3∑-g) found experimentally seem to be in contradiction with this theory while other considerations (Hund, Mulliken, Lennard-Jones) lead to the right result.
Abstract: ACCORDING to the quantum mechanical theory of the chemical bond in its original form, the lowest state of a diatomic molecule should be a singlet term. The ground states of C2 (3IIu) and O2 (3∑-g) found experimentally seem to be in contradiction with this theory while other considerations (Hund, Mulliken, Lennard-Jones) lead to the right result.
12 citations
TL;DR: In this article, the Ba(Sb, Bi, Pb)O3 system is pseudo-ternary showing an extended solid solution series in the inner part, and the BaPb0.75Sb 0.75Bi 0.25O3 is shown to become cubic at 800-850°C in air.
Abstract: At 800-850°C in air the Ba(Sb, Bi, Pb)O3 system is pseudo-ternary showing an extended solid solution series in the inner part. In the binary section between the two superconducting perovskites BaPb0.75Bi0.25O3 and BaPb0.75Sb0.25O3 an increasing Sb-content is correlated with a decreasing Tc and a transition from monoclinic to tetragonal symmetry. A single crystal study of a BaPb0.70Sb0.20Bi0.05O3 crystal showed that solid solution members with lower BaPbO3-content than those of the BaPb0.75(Sb, Bi)O3 intersection become cubic. Valency investigations on Sb in BaPb0.75(Bi, Sb)0.25O3 and BaPb0.75Sb0.25O3 by 121Sb-Mossbauer spectroscopy confirmed the valency of Sb to be 5+ independently of composition.
12 citations
TL;DR: In spite of the steric hindrance effect that is prevalent with multivalent antigens, the antigenic valency is a constant parameter and not a variable influenced by the ratio of antibody to antigen.
12 citations
TL;DR: An X-ray and dielectric study of three series of PbNb2O6-type solid solutions was carried out in this article, where the important role played by ions of different valency located on crystallographically equivalent sites was pointed out.
Abstract: An X-ray and dielectric study of three series of PbNb2O6-type solid solutions was carried out. The PbNbZOs-type phase was present up to the following limits: (1) (Pb1−xBi4/3x)(TixNb2-x.)O6, ×= 0.2; (2) (Pbl-xBi43x)(Ti2Nbl—2)206, ×= 0.2; and (3) (Pb1−xBi2/3x)Nb2O6×= 0.3. Orthorhombic distortion b/a and Curie temperature decreased with increasing x. Bi4/3-Ti206 was most effective in this respect and Bi2, 3-Nb2O6 had the least influence. The important role played by ions of different valency located on crystallographically equivalent sites is pointed out.
12 citations
TL;DR: The loss of covalency in a strained molecule compared to a strain-free reference molecule is used to estimate molecular strain this paper, which leads to loss of a valency in these bonds.
Abstract: The loss of covalency in a strained molecule compared to a strain-free reference molecule is used to estimate molecular strain. Results for several ring systems show that strain arises mainly due to the bent nature of the CC bonds, which leads to loss of a valency in these bonds. The reduced covalency of the CH bonds is also seen to contribute to strain.
12 citations