Assertion (A) : Lines of Lyman series of hydrogen spectrum lie in ultraviolet region but lines of Balmer series lie in visible light region.Reason (R) : Subsequent to the emission of a line of Balmer series we must obtain the first line of Lyman series of hydrogen atom.

Assertion (A) : Lines of Lyman series of hydrogen spectrum lie in ultr

1.	Assertion (A) : Lines of Lyman series of hydrogen spectrum lie in ultraviolet region but lines of Balmer series lie in visible light region.Reason (R) : Subsequent to the emission of a line of Balmer series we must obtain the first line of Lyman series of hydrogen atom.
Answer» If both assertion and reason are true and the reason is the correct EXPLANATION of the assertion. If both assertion and reason are true but reason is not the correct explanation of the assertion. If assertion is true but reason is false. If the assertion is false but reason is true. Solution :WHENEVER there is an electronic transition leading to emission of a spectral line of Balmer series, the electron falls to n=2 state which is ALSO an excited state. So, subsequently the electron must FALL from 1 = 2 state to n = 1 state and in the process radiation corresponding to first line of Lyman series of hydrogen must be emitted.

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Assertion (A) : Lines of Lyman series of hydrogen spectrum lie in ultraviolet region but lines of Balmer series lie in visible light region.Reason (R) : Subsequent to the emission of a line of Balmer series we must obtain the first line of Lyman series of hydrogen atom.

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