THE BOHR MODEL OF THE ATOM
Analysing Atomic Spectra
E = hf
C = f l
Therefore
Ep = (hc)/l
Ep = (6.63 X 10-34J)(3.00 X 108m/s)/2.54 X 10-7m
or
Ep = 7.83 X 10-19 J = 4.89 eV
Ep = Ef - Ei
Ep = (hc)/l = hf
Ep = (hc)/l
Ep = (6.6c X10-34)(3.00 X 108 m/s)/2.59 X 10-7m
Ep = 7.68 X 10-19 J = 4.80 eV
Energy Levels of Hydrogen
En = ((-1.097 X 107 m-1)(6.63 X 10-34Js)(3.00 X 108m/s))/n2
or
Level Value of n Energy Energy above Ground
ground state 1 -13.6 eV 0.0 eV
1st excited state 2 -3.4 eV 10.2 eV
2nd excited state 3 -1.51 eV 12.1 eV
3rd excited state 4 -0.85 eV 12.8 eV
4th excited state 5 -0.54 eV 13.1 eV
January 20, 2014