S03 - S04 Electronegativities of the elements

Electronegativity is defined by Pauling as: “the power of an atom in a molecule to attract electrons to itself”. The values given in overlay illustration S3 are those estimated by Pauling's method. [see references (1) and (2)].
The colour coding on illustration S4 gives a simple and rapid overview of the progression of the electronegativity values through the table. The trends can be easily seen, electronegativity falls as we go down a group (column) or go across a period (row) from left to right.

The markings on the illustration allow the student to transfer the colours onto a black and white copy after the lesson.

References:
1) L. Pauling, The nature of the chemical bond.
Cornell University Press, Ithaca, New York (1960).
2) L. Pauling, General chemistry, Freeman, San Francisco (1970).