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A hydrogen atom initially in the ground...

A hydrogen atom initially in the ground state absorbs a photon which excites it to the n=4 level. Estimate the frequency of the photon.

A

`3.1xx10^(15) Hz`

B

`3.1xx10^(14) Hz`

C

`9.7xx10^(15) Hz`

D

`9.7xx10^(14) Hz`

Text Solution

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The correct Answer is:
A
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(a) State Bohr's postulate to define stable orbits in hydrogen atom. How does de Broglie's hypothesis explain the stability of these orbits ? (b) A hydrogen atom initially in the ground state absorbs a photon which excites it to then n = 4 level . Estimate the frequeny of the photon.

(a) State Bohr's postulate to define stable orbits in hydrogen atom. How does de-Broglie's hypothesis explain the stability of these orbits ? (b) A hydrogen atom initially in the ground state absorbs a photon which excites it to the p=4 level. Estimale the frequency of the pholon.

Knowledge Check

  • A hydrogen atom initially in the ground level absorbs a photon and is excited to n=4 level then the wavelength of photon is

    A
    `790 Å`
    B
    `870 Å`
    C
    `970 Å`
    D
    `1070 Å`

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