In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter orbit jumps of the electron ?
A
5→2
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B
4→1
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C
2→5
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D
13→2
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Solution
The correct option is B5→2 The lines at the red end belong to Balmer series. These are obtained for jumps to n=2 from outer orbits (1st line from n=3,2nd line from n=4,3rd line from n=5)