2. Calculate the Fermi energy for the valence electrons in sodium metal given that the valency of sodium is one, the density of sodium is 0-97 g cm-3, the mass of the electron is 9-05 x 10-28 g, Planck's constant is 6-62 x 10-27 erg sec, Avogadro's number is 6-025 x 1023 per gramme molecule and the atomic weight of. sodium metal is 23. (Ans: e(0) = 3-12 eV, T - 37,000°K.)

2. Calculate the Fermi energy for the valence electrons in sodium metal given that the valency of sodium is one, the density of sodium is 0-97 g cm-3, the mass of the electron is 9-05 x 10-28 g, Planck's constant is 6-62 x 10-27 erg sec, Avogadro's number is 6-025 x 1023 per gramme molecule and the atomic weight of. sodium metal is 23. (Ans: e(0) = 3-12 eV, T - 37,000°K.)