QUESTION:
Firstly-
- N4-n2=E4-E2=-o,85-(-3,39) = 2,54 eV
So the electron has an energy of 2,54 eV=4.064e-19
Stape 2-
E=hxc/wavelength so wavelength=hxc/E
Wavelength= 6,34e-34 x 3e8/4,064e-19=4,68 e-7
So 468 nm
Stape 3-
- Wavelength = c x T <-> T= wavelength/c
T=468e-9/3e8=1,54 e-15
Stape 4-
f=1/T = 6,4 e14 Hz
