Compare the electron spacing of silver (0.26 nm) to the estimate for mean free path calculated earlier (52 nm), explain the discrepancy in terms of Pauli's free-electron model of conductivity.
The Attempt at a Solution
I would say this is down to the exclusion principle. The translational energies are spread out accross a great range as only two electrons can occupy a given translational energy state.
Am I on the right track.