ANY HELP IS MUCH APPRECIATED AND I ALWAYS RATE. PLEASE TAKE ALOOK AT MY OTHER QU

Question

ANY HELP IS MUCH APPRECIATED AND I ALWAYS RATE. PLEASE TAKE ALOOK AT MY OTHER QUESTIONS TOO! THANKS! . What is the speed of a photoelectron ejected from a moleculewith radiation energy of 21 eV and known to come from an orbital ofionization energy 12 eV?
. ANY HELP IS MUCH APPRECIATED AND I ALWAYS RATE. PLEASE TAKE ALOOK AT MY OTHER QUESTIONS TOO! THANKS! . What is the speed of a photoelectron ejected from a moleculewith radiation energy of 21 eV and known to come from an orbital ofionization energy 12 eV?
.

Explanation / Answer

We Know that :

    According to Photoelectric effect :

        K.E = hv- hv0

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