A mineral having the formula AB2 crystallizes in the CCP lattice, with the A atoms occupying the lat — Solid State Chemistry Question

💡 Solution & Explanation

Since A atoms form the CCP lattice (4 atoms per unit cell), there are 8 tetrahedral voids. For the stoichiometry AB2, B atoms must occupy all 8 tetrahedral voids. This is the fluorite ($CaF_2$) structure where each B atom is surrounded by 4 A atoms (coordination number of B is 4).