mscassady13 (mscassady13)

Race #2989

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Official speed 77.13 wpm (61.30 seconds elapsed during race)
Race Start February 23, 2016 11:55:02pm UTC
Race Finish February 23, 2016 11:56:03pm UTC
Outcome Win (1 of 4)
Accuracy 95.0%
Points 0.00
Text #105 (Length: 394 characters)

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.