Browse Questions

# A solid $A^+ B^−$ has NaCl type close packed structure. If the anion has a radius of 250 pm, what should be the ideal radius of the cation? Can a cation $C^+$ having a radius of 180 pm be slipped into the tetrahedral site of the crystal $A^+ B^−$ ? Give reason for your answer.

0.72
Hence (A) is the correct answer.