Q.1:

(11: In the image below, the white circle corresponds to a vacancy in Pt, with the red circles corresponding to the positions of a second vacancy. At position 0 the two vacancies come together to produce a divacancy while at all other positions the divacancy has split with the second vacancy moving varying distances away from the first vacancy. The formation energies of the various second vacancy positions are as follows, in eV: (0) 0.1, (1) -0.2, (2) -0.25, (3) -0.3, (4) -0.2, (5) -0.3. Estimate the likelihood of each vacancy positions, determine the most likely position(s), and explain your reasoning