10. ab erystallizes in a rock salt structure with a:b = l:1. the shortest distance between a and b is y nm. the formula mass of ab is 6.023 y a. kg m . where y

10. AB erystallizes in a rock salt structure with A:B = l:1. The shortest distance between A and B is Y nm. The formula mass of AB is 6.023 Y a. kg m . where Y 1s an arbitrary constant. Find the density in (a) 5 (b) 10 (c) 15 (d) 52.5