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# Bohr's Model of the Hydrogen Atom & Bohr's Postulates Video Lecture - Physics Class 12 - NEET

## Physics Class 12

154 videos|444 docs|185 tests

## FAQs on Bohr's Model of the Hydrogen Atom & Bohr's Postulates Video Lecture - Physics Class 12 - NEET

 1. What is Bohr's Model of the Hydrogen Atom?
Ans. Bohr's Model of the Hydrogen Atom is a simplified model proposed by Niels Bohr in 1913 to explain the behavior of electrons in hydrogen atoms. It suggests that electrons orbit the nucleus in fixed energy levels or shells, and they can only exist in these specific energy levels.
 2. What are the postulates of Bohr's Model of the Hydrogen Atom?
Ans. Bohr's Model of the Hydrogen Atom is based on three postulates: 1. Electrons orbit the nucleus in specific energy levels or shells. 2. Electrons can only transition between these energy levels by absorbing or emitting energy in discrete amounts. 3. The energy of an electron in a particular orbit is quantized and is determined by a specific equation.
 3. How does Bohr's Model explain the spectral lines of hydrogen?
Ans. Bohr's Model explains the spectral lines of hydrogen by proposing that when an electron transitions between energy levels, it either absorbs or emits energy in discrete amounts. These energy changes correspond to the emission or absorption of photons, which have specific wavelengths. Each transition results in a spectral line in the hydrogen spectrum, and the wavelengths of these lines can be calculated using the equation derived from Bohr's Model.
 4. Can Bohr's Model be applied to atoms other than hydrogen?
Ans. Bohr's Model was initially developed for hydrogen atoms, but its principles can be extended to some extent to other single-electron systems, such as singly ionized helium. However, it does not accurately describe the behavior of multi-electron atoms. For more complex atoms, a more sophisticated model, such as the quantum mechanical model, is required.
 5. What are the limitations of Bohr's Model?
Ans. Bohr's Model has several limitations: 1. It fails to explain why electrons do not continuously emit radiation and spiral into the nucleus. 2. It cannot account for the fine details of complex spectral lines in atoms other than hydrogen. 3. It does not incorporate the wave-particle duality of electrons. 4. It cannot explain the behavior of multi-electron atoms. Despite these limitations, Bohr's Model played a significant role in the development of quantum mechanics and provided a foundation for understanding atomic structure.

## Physics Class 12

154 videos|444 docs|185 tests

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