The Bohr Atom Contemporary Chemistry Mrs. Coyle

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The Bohr AtomContemporary ChemistryMrs. Coyle
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Daltons Atomic Model
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Plum Pudding Model (Thomson)
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Niels Bohr (Born in Denmark 1885-1962)

• Student of Rutherford

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Hydrogen Emission Spectrum
Violet Blue Red
Balmer Series
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Niels Bohrs Model (1913)

• Electrons orbit the nucleus in circular paths of
  fixed energy (energy levels).

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Niels Bohrs Atom Contd

• Electrons can jump from energy level to energy
  level.
• Electrons absorb or emit light energy when they
  jump from one energy level to another.

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The energy levels are like the rungs of a ladder,
but are not equally spaced.
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Bohr Model for Hydrogen