What is the size of the largest atom that could be fit into tetrahedral holes of the lattice without — Solid State Chemistry Question

💡 Solution & Explanation

In FCC, the atomic radius of copper is r_Cu = 0.125 nm. The radius of the largest atom that fits in a tetrahedral void is r_tet = 0.225 * r_Cu = 0.225 * 0.125 = 0.0281 pm \u2248 0.028 nm.