Asked by Kaleen

It takes 208.4 kJ of energy to remove one mol of electrons from the atoms on the surface of rubidium metal. If rubidium metal metal is irradiated with 254-nm light, what is the maximum kinetic energy the released electrons can have?

Answers

Answered by DrBob222
208,400 J/mol x (1/6.02E23) = ? work function.
E of photon = hc/wavlength = 6.626E-34*3E8/254E-9 = x

Take the difference between x and ? above and that is the maximum energy of an ejected electron which is KE = 1/2 mv<sup>2</sup>. Then solve for v in m/s.
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