Abstract: According to the relationship between gravitational potential and electrostatic potential, as well as considering the physical meaning of the contrastive mass-to-electricity (mass per unit quantity of electricity) a definition of intensive electrostatic potential of the system(the electrostatic potential per unit mass) was proposed. Our research indicates that the electronegativity of elements (XSc) varied with the intensive electrostatic potential of atomic nucleus Vic and the quantity of electricity of atomic valence shell qcj. A formula for non-dimensional synthetic electronegativity was obtained by multiple regression analysis. The correlation coefficient (R=0.9844) and test of significance (Sig.=0.0000) showed that XSc was closely related to Vic and qcj. The average absolute error of the 77 determined elemental electronegativities was 0.084, compared with Pauling electronegativities. The electronegativity of all elements except H may be calculated conveniently and accurately with our formula, and thus it is a new method for calculating the electronegativity of ions and groups.

Key words: Electronegativities of elements, Intensive electrostatic potential, Electricity of valence shell electrons, Contrastive mass-to-electricity, Atomic radius