# Name some spectrum lines named after the scientists who discovered them

Like the Balmer series is the part of the hydrogen emission spectrum which is generated by the excitation of an electron from the second shell to any other shell. In the same way, other spectrum lines have been named after the scientists who discovered them. They are listed below:

1. a) Lyman Series: – The spectral lines produced when the electron jumps from any higher stationary orbit to first stationary orbit are called the Lyman series. For Lyman series, ni=1.

Now putting nf=1 in the relation given by Bohr, =RH(), ni=2, 3, 4…

1. b) Balmer Series: – The spectral lines emittedwhen the electron undergoes a transition from any higher stationary orbit to the second stationary orbit with n=2 are called the Balmer Series. Here, ni=2

=RH (), ni=3, 4, 5…

1. c) Paschen Series: – The spectral lines produced when the electron undergoes a transition from any higher stationary orbit to third stationary orbit with n=3 are called the Paschen Series. Here nf=3

= RH (), ni=4, 5, 6…

1. d) Brackett Series: – The spectral lines produced when the electron undergoes a transition from any higher stationary orbit to fourth stationary orbit with n=4 are called the Bracket Series. Here, nf=4

= RH (), ni= 5, 6, 7…

1. e) Pfund Series: – The spectral lines produced when the electron undergoes a transition from any higher stationary orbit jumps to the fifth stationary orbit with n=5 are called the Pfund Series. Here, nf=5

= RH (), ni=6, 7, 8…

1. f) Humphrey Series: – The spectral lines produced when the electron undergoes a transition from any higher stationary orbit to sixth stationary orbit with n=6 are called the Humphrey Series. Here nf=6

= RH (), ni=7, 8, 9…