Zhang Electronegativities derived from ionocovalency

Yonghe Zhang

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

 

Based on Schrödinger Wave Equation and Ionocovalent theory [1] we defined ionocovlent function as

                               Ze2/r = I(Z*)C(rc-1)                                                     (1)

where C is covalent function of rc , I is ionic function of Z*:

                          Z*=n*( Iz /R)½                                                                  (2)

Z* [2] we derived from Bohr energy model:

                           E = - Z2me4/8n2h2 ɛ02 = - RZ2/n2                               (3)

Substituting Eq (2) into (1), we can naturally correlate the bond properties to the quantum-mechanics, and get the IC model [4]:

                           I ( Iz )C(n*rc-1) = n*( Iz /R)½ rc-1                                    (4)

As an application of ionocovalency, by Plotting Pauling values of Xp against n*(Iav/R)½rc-1 , we obtain a new electronegativity

                              XIC =0.412 n*(Iav/R)½ rc-1 + 0.387                               (5)

Based on the above IC model, our previous electronegativity scale Xz [2] can be accounted for IC-force:

                     IC =I(V)C(r-1)= I(Z*)C(r-2) = n*(Iz /R) ½rc-2                         (6)

                       Xz = 0.241 n*( Iz /R) ½rc-2 + 0.775                                     (7)

 

[1] Zhang, Y. Ionocovalency and Applications 1. Ionocovalency Model and Orbital   Hybrid Scales. Int. J. Mol. Sci. 2010, 11, 4381-4406

[2] Zhang, Y. Inorg Chem. 21 (1982) 3886.

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