1.

The Balmer series in the hydrogen spectrum corresponds to the transition from n_(1) = 2 " to " n_(2) = 3, 4... This series lies in the visible region. Calculate the wave number of line associated with the transition in Balmer series when the electron moves to n = 4 orbit (R_(H) = 109677 cm^(-1))

Answer»

Solution :`bar(v) = 109677 cm^(-1) ((1)/(n_(1)^(2)) - (1)/(n_(2)^(2))) = 109677 XX ((1)/(2^(2)) - (1)/(4^(2))) = 109677 ((1)/(4) - (1)/(16)) cm^(-1) = 20564.4 cm^(-1)`


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