AIIMS 2017 Physics Hydrogen Spectrum MCQ Question
In the following questions, a statement of assertion is given followed by a corresponding statement of reason.
Assertion:(A) Hydrogen atom consists of only one electron but its emission spectrum has many lines.
Reason:Only Lyman series is found in the absorption spectrum of hydrogen atom whereas in the emission spectrum, all the series are found.
If both assertion and reason are true and reason is correct explanation of assertion.
If both assertion and reason are true and reason is not correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option C is correct because the emission spectrum of a hydrogen atom arises from the transitions of its single electron between various energy levels, resulting in multiple spectral lines corresponding to different wavelengths of emitted light. Each transition releases a photon with a specific energy, leading to the observed line spectrum despite having only one electron.
Option A is incorrect because it suggests that while the statement about the hydrogen atom having one electron is true, it does not adequately explain the complexity of the emission spectrum. Options B, C, and D are not applicable as they do not provide relevant explanations or alternatives related to the question. Understanding the quantized nature of electron energy levels is crucial for comprehending why hydrogen's emission spectrum is rich in lines.
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