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#Mon Aug 09 12:01:57 CEST 2010
Text__Hoat4KOdEd-WfYQ0GneCwQ_text=<p>In 1910 Ernest Rutherford suspects that the atom must have a central positive core surrounded by a spherically distributed negative charge. His student Niels Bohr elaborates this into a planet-like model by incorporating ideas from quantum theory\: electrons orbit the positive core like planets. The element's position in the Periodic Table corresponds to the number of negative electrons.</p> 
Text__Hoat4KOdEd-WfYQ0GneCwQ_title=Bohr's Atomic Model