Riddle (riddles)

Race #170

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Official speed 58.57 wpm (43.23 seconds elapsed during race)
Race Start March 26, 2011 3:10:46am UTC
Race Finish March 26, 2011 3:11:29am UTC
Outcome No win (2 of 3)
Points 0.00
Text #104 (Length: 211 characters)

The chemistry of an element is determined by the manner in which its electrons are arranged in the atom. Such arrangements are the basis of the modern periodic classification of the elements: the Periodic Table.