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typeracer

Pit Stop
Racer Marek (wecros)
Race Number 46
Date Sun, 24 Sep 2017 10:12:21
Speed 67 WPM Try to beat?
Accuracy 96.1%
Rank 1st place (out of 5)
Opponents masterh724 (3rd place) ram0 (5th 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)

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