e? F = 4TE,r² - (b) Use the fact that this is the centripetal force to show that the square of each electron's orbital speed v is given by v? Z 4T€,mr\ 4 (c) Use the result of part (b) along with Bohr's rule that the angular momentum of each of the two elec- trons is L = h in the ground state to show that r = TT me?| z - (d) Show that the atom's total energy (kinetic plus potential) is me E = 22 - Z - (e) The energy needed to remove both electrons is just the negative of the energy you found in part (d). Compute the energy needed to remove both elec- trons in helium, and then repeat for Li*. Compare your results with the experimental values of 79.0 eV and 198 eV, respectively.

e? F = 4TE,r² - (b) Use the fact that this is the centripetal force to show that the square of each electron's orbital speed v is given by v? Z 4T€,mr\ 4 (c) Use the result of part (b) along with Bohr's rule that the angular momentum of each of the two elec- trons is L = h in the ground state to show that r = TT me?| z - (d) Show that the atom's total energy (kinetic plus potential) is me E = 22 - Z - (e) The energy needed to remove both electrons is just the negative of the energy you found in part (d). Compute the energy needed to remove both elec- trons in helium, and then repeat for Li*. Compare your results with the experimental values of 79.0 eV and 198 eV, respectively.