A scheme for accounting for the electron configurations of elements in which the electronA negatively charged, sub-atomic particle with charge of 1.602 x 10-19 coulombs and mass of9.109 x 1023 kilograms; electrons have both wave and particle properties; electrons occupy most of the volume of an atom but represent only a tiny fraction of an atom's mass. configuration of one element is determined by adding one electron to the electron configuration of the previous element in the periodic tableA chart showing the symbols of the elements arranged in order by atomic number and having chemically related elements appearing in columns..
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