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Question

The first emission line of hydrogen atomic spectrum in the Balmer series appears at (R = Rydberg constant):

A
5R36cm1
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B
3R4cm1
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C
7R144cm1
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D
9R400cm1
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Solution

The correct option is A 5R36cm1
Use the formula ,
wavenumber =R×(1/n211/n22)=R×(1/n12−1/n22).

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