What is the binding energy of an electron in a..........?

Question

What is the binding energy of an electron in a photosensitive metal (in kJ/mol) if the minimum frequency of light that can eject electrons from the metal is 6.30 × 1014 Hz?

a.476 kJ/mol
b.121 kJ/mol
c.251 kJ/mol
d.315 kJ/mol
e.212 kJ/mol

Answer 1

c.251 kJ/mol