when the electron of hdrogen atom returns to M shell from shells of higher energy , we get a series of lines in spectrum. This series is called

when the electron of hdrogen atom returns to M shell from shells of hi

1.	when the electron of hdrogen atom returns to M shell from shells of higher energy , we get a series of lines in spectrum. This series is called
Answer» Answer:—Explanation:When the electrons of hydrogen atom return to L shell from shells of higher energy, we get a series of line in the SPECTRUM. This series is called. The observed WAVELEGNTH in the line spectrum of hydrogen atom were first expressed in terms of a series by Johann JAKOB Balmer, a Swiss TEACHER. 1λ=RH[122-1n2]n=3,4,5 . . .