Tuesday, 26 April 2016

Spectral series of Hydrogen atom


Spectral series of hydrogen atom

Whenever  an  electron  in  a  hydrogen  atom  jumps  from  higher energy  level  to  the  lower  energy  level,  the  difference  in  energies  of  the two  levels  is  emitted  as  a  radiation  of  particular  wavelength.  It  is called  a  spectral  line.
As  the  wavelength  of  the  spectral  line  depends upon  the  two  orbits  (energy  levels)  between which  the  transition  of electron  takes  place,  various  spectral  lines  are  obtained.  The  different wavelengths  constitute  spectral  series  which  are  the  characteristic  of the  atoms  emitting  them.  The  following  are  the  spectral  series  of hydrogen atom.

  •  Lyman series
  • Balmer series
  • Paschen series
  • Brackett series
  • Pfund series