First slide

Bohr Model of the Hydrogen atom.

Question

Out of the following which one is not a possible energy for a-photon to be emitted by hydrogen atom according to Bohr’s atomic model?

Moderate

A

0.65 eV
B

1.9 eV
C

11.1 eV
D

13.6 eV

Solution

E₁ = –13.6ev ; E₂ = –3.4ev
E₃ = –1.51ev ; E₄ = –0.85ev
$E_{\infty} =$ 0 ; E₄ – E₃ = 0.66ev
E₃ – E₂ = 1.9ev ; $E_{\infty} -$ $E_{1}$ = 13.6ev
so 11.1ev is not possible energy for a photon

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