Whenever a hydrogen atom emits a photon in the Balmer series
A
It may emit another photon in the Balmer series
B
It must emit another photon in the Lyman series
C
the second photon, emitted will have a wavelength of about 122nm
D
It may emit a second photon, but the wavelength of this photon cannot be predicted
Text Solution
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The correct Answer is:
A, B, C, D
Any transition causing a photon to be emitted in the Balmer series must end at n=2. This must be followed by the transition from n = 2 to n =1, emitting a photon of energy 10.2 eV, which corresponds to a wavelength of about 122 nm. This belongs to the Lyman series
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