Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (2): 207-214. Previous Articles     Next Articles

Original Articles

基态原子价壳层电子能级连接性指数与元素的电负性

聂长明;文松年;李忠海;谢水波;王宏青   

  1. 南华大学化学化工学院;中南林学院实验教学中心
  • 出版日期:2002-02-15 发布日期:2002-02-15

The connectivity index of valence shell electron energy levels for ground state atoms and electronegativity of elements

Nie Changming;Wen Songnian;Li Zhonghai;Xie Shuibo;Wang Hongqing   

  • Online:2002-02-15 Published:2002-02-15

A novel connectivity index of valence shell electron energy levels for a ground state atom ^mVEI (m=0, 1, 2, …) is put forward in this paper, which appears uniquely to the ground state atom and has excellent structural selectivity. Regarding ^0VEI, ^1VEI, total ionization energy of valence shell electrons ΣniEi and total valence shell electrons Σni as fundamental parameters, the electronegativity of element can be defined as follows: X~N=0.444067+1.190653(1-1. 32775/Σni)(^0VEI)- 3.154675(^1VEI)+0.134591(ΣniEi/Σni). By above formula the electronegativities of maingroup elements, subgroup elements and inert elements in the Periodic Table are given. The results indicate that the new electronegativity scale X~N is in conformity very much with the Pauling scale which is widely accepted. Moreover, electronegativities of hybridrized orbitals sp, sp^2, sp^3 for carbon atom can be also obtained from the connectivity index of valence orbital energy levels.

Key words: GROUND STATE, CARBON ATOM, HYBRID ORBITAL, ATOM, ELECTRON ENERGY LEVEL, ELECTRONEGATIVITY

CLC Number: