explain the Bohr's model of an atom with its importance and why did we get lines in the spectroscope?
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Answer:
This is explained in the Bohr model by the realization that the electron orbits are not equally spaced. ... The electron energy level diagram for the hydrogen atom. He found that the four visible spectral lines corresponded to transitions from higher energy levels down to the second energy level (n = 2).
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✎BOHR MODEL OF AN ATOM
1.) bohr proposed that while sorting the nucleus of an atom, nucleus could only occupy a certain discrete orbits.
2.) further, bohr said electrons never take energy only when they change their energy levels.
- if they move up, they take energy.
- if they move down, they release energy.
- this energy itself is released in discrete packets called photons.
The Bohr model description in which electrons can only occur by certain orbits is called the shell model of the atom.
a photon is emitted with energy E = hF
3.) an electron which is not in its native energy level (i.e., excited state) always has to fall back to its original, stable level.
4.) bohr interpreter the lines in the spectra of gases as formed by the transitions of electrons to and from various energy levels.
✎IMPORTANCE OF BOHR MODEL
- using charge and mass of an electron and Planck's constant ( E = hV).
- calculated the energies that an electron should have in the orbits.
- compare calculating to the line spectrum.
- the calculations were correct.
- theenergy that pohar models at an electron should have, was the same energy that the colour lines produced from the bright line spectrum.
✎ SO WHY DID WE GET LINES IN THE SPECTROSCOPE?
- Niels bohr (1885-1962)
- worked with Rutherford.
- model of the hydrogen atom :- the singleelectron of the hydrogen atom can circle the nucleus only in allowed paths called orbits.
- lowest energy = closest orbit to the nucleus.