. The Balmer series in the hydrogen spectrum corresponds to the transition from n1 =2, to n2=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.
(RH=109667 cm-1
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Explanation:
1/lambda = 109667(1/2^2 - 1/4^2)
= 109667(1/4-1/16)
(3/16)× 109667
20.562× 10^-3
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