JEE Main 2022 · 29 Jul · Shift 1, Chemistry question 82

Ionic radii of cation A$^+$ and anion B$^-$ are 102 and 181 pm respectively. These ions are allowed to crystallize into an ionic solid. This crystal has cubic close packing for B$^-$. A$^+$ is present in all octahedral voids. The edge length of the unit cell of the crystal AB is _______ pm. (Nearest Integer)