A photon of wavelength 80 nm is absorbed by the electron in the groundstate level of...
A photon of wavelength 80 nm is absorbed by the electron in the groundstate level of the hydrogen atom. Is this enough energy to ionise the atom? If so calculate the kinetic energy of the free electron.
Homework Answers
Binding energy of electron in ground state level, E = 13.6 eV
Energy of photon = h c / lambda
= 1240 eV-nm / 80nm = 15.5 eV
Energy of photon is greater than binding energy of electron.
SO yes, It is enough energy. .......Ans
KE of free electron = 15.5 - 13.6 = 1.9 eV ......Ans
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