The wavelength of the first spectral line of an element is 5893 Å. The first excitation energy is :
Answer & explanation
Correct answer: option 1
First Excitation energy is $ \Delta E = \frac{hc}{\lambda} = \frac{12400}{5893}eV = 2.10 eV$
The wavelength of the first spectral line of an element is 5893 Å. The first excitation energy is :
Correct answer: option 1
First Excitation energy is $ \Delta E = \frac{hc}{\lambda} = \frac{12400}{5893}eV = 2.10 eV$