Potassium hexachloroplatinate (IV), K[PtCl] adopts anti-fluorite crystal structure. The correct info — Solid State Chemistry Question

💡 Solution & Explanation

In an anti-fluorite structure, the larger anions (PtCl$_6^{2-}$) constitute the CCP (or FCC) lattice, and the smaller cations (K$^+$) occupy 100% of the tetrahedral voids. In such an arrangement, the species forming the CCP lattice is surrounded by 8 species in the tetrahedral voids, giving it a coordination number of 8. Therefore, correct answer is A,B,D.