1.

In Balmer series of hydrogen atom spectrum which electronic transition causes third line ?

Answer»

Fifth Bohr orbit to SECOND one
Fifth Bohr orbit to first one
Fourth Bohr orbit to second one
Fourth Bohr orbit to first one

Solution :`1^(ST)` line is for `n_(3) - n_(2), 2^("ND")` for `n_(4) to n_(2)` and `3^("rd")` for `n_(5)ton_(2)`.


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