This video tutorial explains how to solve unit cell chemistry problems associated with closed packed structures such as the body centered cubic structure and the face centered cubic structure also known as the cubic closest packing structure. This video explains how to calculate the atomic radius, edge length and density of a cubic crystal lattice structure. You need to know the coordination number or number of atoms per unit cell associated with a given cubic crystal structure. This video contains plenty of examples and practice problems. New Chemistry Video Playlist: https://www.youtube.com/watch?v=bka20Q9TN6M&t=25s&list=PL0o_zxa4K1BWziAvOKdqsMFSB_MyyLAqS&index=1 Access to Premium Videos: https://www.patreon.com/MathScienceTutor Facebook: https://www.facebook.com/MathScienceTutoring/