HI im doing this equation : 14. When a certain metal is illuminated at 3.50x10^2nm the maximum kinetic energy of the ejected electrons is 1.20 eV. Calculate the work function of the metal. I did this: E=Ek+W W=E+Ek W=hc/Lambda -Ek =(6.63E-34J.s)(3.00E8m/s)/3.50E2m)-1.20eV =-1.2 That answer is wrong the correct one is 2.35 eV. what did i do wrong, PLS help me ty and show me what I should of done so i Dont repeat this mistake again.