Question

For K+ and Br- find the radius of K+ ion to Br-ion and on this basis predict the shape of crystal geometry of KBr.Draw a diagram indicating the arrangement of K+ and Br- ions in the crystal of KBr

Answer 1

for fig see attachmentK+/Br-ratio is 152 pm/182pm = 0.835. Thus, it should be cubic structure with CN = 8