Help with Chemistry Problem please!?

Ela

New member
Potassium (K) has a work function value of 2.29 eV. What is the wavelength of light required to begin to generate a current in an apparatus like the one Hertz used with potassium metal?

a) 5.53 × 1014 s-1
b) 1.6 × 10-19 nm
c) 543 nm
d) 1.84 × 106 nm
 
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