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what will be the shortest wavelength in hydrogen spectrum of lyman series when r=109678 in per cm is

what will be the shortest wavelength in hydrogen spectrum of lyman series when r=109678 in per cm is

Grade:12th pass

1 Answers

Bhavya
askIITians Faculty 1281 Points
5 years ago
We know that the rydberg equation is :-
505-541_rydberg.png
The last line of any series is the line of shortest wavelength.
Putting the values of R = 109678 cm, Z= 1, n1 = 1, n2 =\infty
= 109678*12*(1/12 – 1/\infty2)
= 109678 cm
Thus wavelength = 1/109678 =9.1 *10-6cm

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