The longest wavelength of the Lyman series for hydrogen atom is the same as the wavelength of a certain line in the spectrum of `He^+` when the electron makes a trensiton from `n rarr 2`. The value of n isA. 3B. 4C. 5D. 6

The longest wavelength of the Lyman series for hydrogen atom is the sa

1.	The longest wavelength of the Lyman series for hydrogen atom is the same as the wavelength of a certain line in the spectrum of `He^+` when the electron makes a trensiton from `n rarr 2`. The value of n isA. 3B. 4C. 5D. 6
Answer» Correct Answer - B Longest wavelength of Lyman series means, minimum energy corresponding n =2 to n=1. `:. (E_2 - E_1)_H = (E_n - E_2)_(He+)` `:. (-13.6)/((2))^2 +(13.6)/((1))^2 = (-13.6(Z)^2/(n^2 + (13.6(Z)^2/((2))^2` Putting Z =2, we get n =4.

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The longest wavelength of the Lyman series for hydrogen atom is the same as the wavelength of a certain line in the spectrum of `He^+` when the electron makes a trensiton from `n rarr 2`. The value of n isA. 3B. 4C. 5D. 6

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