AIIMS 2019 Chemistry Hydrogen Spectrum Assertion Reason Question
Assertion: Balmer series contains four important lines called Hₐ, Hᵦ, Hᵧ and Hₛ lines (wavelength 6563 Å, 4862 Å, 4341 Å, 4102 Å respectively). Reason: This is due to the jump from n₂ = 3,4,5,6 respectively to n₁ = 2.
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
Correct Answer
Detailed Explanation
Option A is correct because both the assertion and the reason are true: the Balmer series indeed includes the Hₐ, Hᵦ, Hᵧ, and Hₛ lines with the specified wavelengths, and these lines correspond to electron transitions from higher energy levels (n₂ = 3, 4, 5, 6) to the n₁ = 2 energy level in hydrogen. Option B is incorrect because the reason accurately explains the assertion. Option C is incorrect as both statements are true, and option D is incorrect since both the assertion and reason are valid. Understanding these transitions is crucial in spectroscopy and the study of atomic structure.
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