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typeracer

Pit Stop
Racer JusticeEX (justiceex)
Race Number 12036
Date Sun, 23 Aug 2015 23:46:04
Speed 68 WPM Try to beat?
Accuracy 88.1%
Rank 2nd place (out of 3)
Opponents colleenchase (1st 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)