Electronegativity scale, definition table

Another fundamental property of chemical bonds is polarity. In general, it is to be expected that the distribution of the pair of electrons in a covalent bond will favor one of the two atoms. The tendency of an atom to attract electrons is called electronegativity. There are a number of different approaches to assigning electronegativity, and most are numerically scaled to a definition originally proposed by Pauling. Part A of Table 1.6... 

The Allred and Rochow and the Mulliken scales place the atoms of the periodic table in roughly the same order as the Pauling scale so, for our placement of the AOs in an MO diagram, the values in Table 7.4 will suffice. The other definitions help to highlight different approaches to the concept of electronegativity. 

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