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Question
The transition from the state n = 4 to n = 3 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from :
Options:
A .  3→2
B .  4→2
C .  5→4
D .  2→1
Answer: Option C
:
C
Infra- red radiation has lesser energy than Ulta-Violet radiation. Hence the transition should take place between energy levels which have lesser energy.
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