Problem 3 Consider a fictitious atom trellium-D which has a single valent electron in its outermost shell. The ground state (13;) of the electron is at 1091"'below the threshold ofionization. Excited states of the talent electron are given by ER = 51/113 Where :1 represents the quantum number of the state. The degeneracy of the electronic states is given by n3. (A) Calculate the probability ofoccupying the ground state and the rst four excited states of the valence electron of trillium-D at 3000K. (I 0 points) (B) Using a computen plot the probability of occupying the rst excited state above the ground state as a function of temperature over the range lOOKl >