Abstract
Studies on the Si-O distances and the geometrical features of the CrO6 octahedra in several chromium silicates reveal that the electronegativity of the Cr3+ ion depends on the geometrical feature of the CrO6 octahedron. Since the electron density and the screening constant of the Cr3+ ion in the regions directed toward the oxygens decrease with decrease of the repulsion between the 2p orbitals of the oxygen ions and the 3d orbitals in the t2g state of the Cr3+ ion, the effective nuclear charge and the electronegativity of the Cr3+ ion increase with decrease of the repulsion. It seems that the electronegativity of the Cr3+ ion based on the heat of formation corresponds to the value in a regular octahedron.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
