Resume of the VSEPR model

Non-bonding or lone pairs have larger domains than bonding pairs in the same valence shell. 

Bonding pair domains in the valence shell of a central atom decrease in size with increasing electronegativity of the ligand, and increase in size with increasing electronegativity of the central atom. 

Double and triple bond domains which are composed of two and three electron pairs, respectively, are larger than single-bond electron pair domains. 

The spherical surface, on which the electron pairs are assumed to be localized in Gillespie s model, is identified with the sphere of maximum charge concentration in the VSCC of the central A atom, and the localized pairs of electrons are identified with the local concentrations of electronic charge present on the sphere of maximum charge concentration. 

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