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Racer Alamgir (alamgirvigu)
Race Number 239
Date Sat, 21 Jun 2014 12:53:53 +0000
Speed 57 WPM Try to beat?
Accuracy 98.5%
Rank 4th place (out of 5)
Opponents anduril_01 (5th place) lookingsideways (1st place) winterzero (3rd 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.
Structure and Bonding (Basic Concepts in Chemistry) (book) by Jack Barrett (see stats)