Atransition for H-atom from II to I orbit has same wavelength as from n^(th) orbit to 2^(nd) orbit for He^+ ion. The value of ‘n’ is _________ .

Atransition for H-atom from II to I orbit has same wavelength as from

1.	Atransition for H-atom from II to I orbit has same wavelength as from n^(th) orbit to 2^(nd) orbit for He^+ ion. The value of ‘n’ is _________ .
Answer» SOLUTION :`1/lambda = R [1/1 - 1/4] = 4 R [1/4 - 1/(n_2^2)] THEREFORE n^2 = 4`