learning how (iamimago)

Race #164

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Official speed 63.47 wpm (74.49 seconds elapsed during race)
Race Start November 9, 2012 12:45:00pm UTC
Race Finish November 9, 2012 12:46:15pm UTC
Outcome Win (1 of 2)
Accuracy 86.0%
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.