This diagram (click to enlarge) depicts the cubic unit cell for an ionic compound with formula AxBy. The lighter, larger atoms represent element A and the smaller, darker atoms represent element B. * There is an ' A ' atom on each corner of the cube AND in the center of the cube. * There is a ' B ' atom on each edge of the cube. * There are not any atoms of the faces of the cube. Determine the empirical formula (lowest ratio) for the AxBy compound represented. Hint: Think about what fraction of an edge atom will be within the cube? 2 POINTS