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typeracer

Pit Stop
Racer EI5 (erniuslt)
Race Number 1499
Date Sat, 5 Jul 2014 18:33:26
Speed 73 WPM Try to beat?
Accuracy 93.1%
Rank 4th place (out of 5)
Opponents lucean (2nd place) raicouch (5th place) xwiz (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)