number of spectral lines in balmer series when an electron return from 7th orbit to 1st orbit of hydrogen atom are
Number of spectral lines emitted in any particular series is (n2 - n1) = 7 - 2 = 5
It should be noted that n2 = 7 and n1 of balmer series is always 2.
It should be noted that n2 = 7 and n1 of balmer series is always 2.