In Bohr series of lines of hydrogen spectrum, third line from the red end corresponds to which one of the following inner orbit jumps of electron for Bohr's orbit in atom of hydrogen
A
4→1
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B
2→5
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C
3→2
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D
5→2
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Solution
The correct option is A5→2
We see red end means it is a part of the visible region and obviously only Balmer series corresponds to the visible region for the Balmer series n1=2 and red end means low energy or third end from this means n2=−5