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Q.

A hydrogen atom in an excited state emits a photon which has the longest wavelength of the Paschen series. Further emissions from the atom cannot include the

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a

Longest wavelength of the lymann series.

b

Second longest wavelength of the lymann series

c

Longest wavelength of the Balmer series

d

Second longest wavelength of the Balmer series.

answer is D.

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Detailed Solution

For Paschen series n1=33→2,        2→1       (or)     3→1 are  possible but  not 4→2  as it is in n = 3.
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