1. The problem statement, all variables and given/known data Barium crystallizes in a body centered cubic structure in which the cell edge length is 0.5025 nm. Calculate the shortest distance between neighboring atoms in the crystal. 2. Relevant equations Avagodro's number 3. The attempt at a solution 0.5025 x 10^-7 cm ( 1/2atoms) (6.022 x 10^23 atoms) That's as much as I know so far, I can't use bragg's law because I don't have the angle nor the order nor the wavelength to figure it out. How should I solve this?