Ionocovalency differs from Pauling electronegativity

Yonghe Zhang

American Huilin Institute http://www.amhuilin.com/  

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Ionocovalency:

dual ionocovalency defined and correlated with Bohr energy levels and spectroscopy:

I ( Iz )C(n*rc-1) = n*(Iz/R)½rc-1

calculating absolute potential energy of all the electronic structure State from 1s to nf and thus can explain almost all chemical observations.

 

Pauling Electronegativity: 

         1) Defined confusably:   the attraction for an electron is clearly not expected to be the same for different valencies of an element [3]

         2) Correlated limitedly: based on the empirical relation between the electronagtivities of two atoms (H,Cl) and the dissociation energy of the bond formed between them:

              Xcl – Xh = (ΔHCL/96.5) ½

    extended unconditionally to calculating the electronegativities of all  elements.

   a) Ignored the Bohr atomic energy levels and spatial ionicity: I (n*, Iz ),thus ignoring the atom Valence state change [3-8]

   b) Ignored spatial covalency: C(n*rc-1), thus ignored the orbital overlap, such as COOP [19].

 

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6. Portier, J.; Campet, G.; Etoumeau, J.; Shastry, M.C.R.; Tanguy, B. A simple approach to materials design: Role played by an ionic-covalent parameter based on polarizing power and electronegativity. J. Alloys Compd. 1994, 209, 59–64.

7. MurphyL. R.; Week, T. L.; Allred, A. L.; Allen*,L. C. Evaluation and Test of Pauling's Electronegativity Scale J. Phys. Chem. A, 2000, 104 (24), pp 5867–5871

8. Lenglet, M. Iono-covalent character of the metal-oxygen bonds in oxides: A comparison of experimental and theoretical data. Act. Passive Electron. Compon. 2004, 27, 1–60.

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    role of covalency inferroelectric niobates and tantalates. Eur. Phys. J. B 1998, 6, 307.

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