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Bohr-summary - Chem111 Fall 2006 Summary of the Results of...

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Chem111 Fall, 2006 Summary of the Results of the Bohr Model Æ Allowed radii for the Bohr atom: r n h Z e m n Z a a h e m e e = = = 2 2 0 2 2 0 0 2 0 2 ε π ε π radius is directly proportional to n 2 (level) radius is inversely proportional to Z * for a given level n, increasing the nuclear charge decreases the radius (as it should – the larger positive charge pulls the negative electron closer) Æ Allowed energy levels for the Bohr atom: E = 2 0 2 2 4 2 8 ε h n m e Z e energy is negative and tends towards zero as the n (level) increases the energy of the n=1 level is the energy required to remove an
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