State the three postulates of Bohr's theory of hydrogen atom. A hydrogen atom de-excites from level n to level (n – 1). Show that, according to Bohr's theory, the frequency of radiation emitted ν ≅ α/n³, for large values of n, where α is a constant. This result exactly agrees with that obtained from classical physics – one of the successes of Bohr's theory.

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Bohr's Postulates for Hydrogen Atom

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