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Question

A hydrogen atoms emits green light when it changes from the n=4 energy level to n=2 level. which color of light would the atom emit when it changes from the n=5 level to n=2 level ?

A
red
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B
yellow
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C
green
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D
violet
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Solution

The correct option is C green
According to Balmer series.
¯¯¯¯V=R[1z21n2]
n=3,4,5,6,......
Spectra basically is belonging the location of visible zone. When wavelength is in between 4000A0 to 5000A0 then, green color of light would the atom emit. When it changes from the n=5 level to n=2 level.

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