Question

When a electron in H-atom jumps from $n=4$ to $n=1$, ultraviolet light is emitted, if the transition corresponds to $n=4$ to $n=2$, which of the following colours will be emitted?

• A. ultra violet
• B. green
• C. infra red
• D. no colour

Answer 1

Answer: (B)

green

When an electron in H-atom jumps from $n=4$ to $n=1$, Lyman series results which fall in the ultraviolet region. For the transition from $n=4$ to $n=2$, Balmer series is resulted which falls in visible region. The green light is one of the lights of visible region.