posted by B .
Determine the longest wavelength of light required to remove an electron from a sample of potassium metal, if the binding energy for an electron in K is 1.76 × 103 kJ/mol.
isn't Planck's equation working?
You will have to get energy per electron, or
energy= 1.76E3*1E3avagradros number to get energy in joules/electron
opps, division sign disappeared.
energy= 1.76E3*1E3/ avagradros number to get energy in joules/electron