In an experiment it was found that the kinetic energy of the first ejected electron from a particular element was 25.0%?

In an experiment it was found that the kinetic energy of the first ejected electron from a particular element was 25.0% of the photon energy of the UV source using a UV source of wavelength 169 nm. Calculate the first ionization of this element in J per atom.  a. 8.39 x 10-32 J  b. 2.94 x 10-19 J  c. 8.82 x 10-19... show more In an experiment it was found that the kinetic energy of the first ejected electron from a particular element was 25.0% of the photon energy of the UV source using a UV source of wavelength 169 nm. Calculate the first ionization of this element in J per atom. 


a. 8.39 x 10-32 J 
b. 2.94 x 10-19 J 
c. 8.82 x 10-19 J 
d. 1.18 x 10-18 J
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