wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

In the Bohr model of the hydrogen atom, radiation is emitted when the electron?


Open in App
Solution

Bohr's Model of a Hydrogen Atom:

  • Bohr Model of the hydrogen atom was first proposed as the planetary model, and later an assumption concerning the electrons was made.
  • The assumption was based on the quantization of the structure of atoms.
  • Bohr’s model of the hydrogen atom is generally based on three postulates, which can be given as:
  • An electron moves around the nucleus in a fixed circular orbit.
  • An electron’s angular momentum in the orbit is said to be quantized.
  • The change in an electron’s energy when it makes a quantum jump from one orbit to another is always known to be accompanied by the emission or absorption of a photon.

Emission of radiation:

  • According to the Bohr model of the hydrogen atom, radiation is only emitted when an electron jumps from a higher energy state to a lower energy state.
  • According to the model, the electron being in its stable stationary orbital does not emit or absorb any energy.
  • Only when an electron gets energy equal to its energy gap between the transition orbits, does it get excited and jumps to the higher state.
  • But as it is unstable at the higher energy level, hence it emits the radiation and jumps back to its lower state.
  • The energy of the emitted photon is always said to be equal to the difference in energy between the two energy levels for a specific transition, which is given as:

E=

( where h= planks constant and v= frequency of the photon emission)

Hence, In the Bohr model of the hydrogen atom, radiation is emitted when the electron jumps back from a higher to lower energy state.


flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Bohr's Model of Atom
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon