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typeracer

Pit Stop
Racer Jason (raven3094)
Race Number 148
Date Fri, 16 Sep 2016 23:11:16
Speed 73 WPM Try to beat?
Accuracy 87.4%
Rank 3rd place (out of 5)
Opponents dcohen91 (1st place) gaplanidadacan (4th place)

Text typed:

The treatment of atoms with more than one electron requires consideration of the effects of interelectronic repulsion, orbital penetration towards the nuclear shielding, and an extra quantum number which specifies the intrinsic energy of the electron in any orbital. All these considerations are necessary to allow construction of the modern form of the periodic classification of the elements.
— (book) by Jack Barrett (see stats)