Question

For tetrahedral co-ordination the radius ratio $(r^{+}/r^{-})$ should be

• A. 1.414 - 0.732
• B. > 0.732
• C. 0.156 - 0.225
• D. 0.225 - 0.414

Answer 1

Answer: (D)

For an atom or ion to fit into a tetrahedral void the radius ratio $(r^{+}/r^{-})$ should be $0.225-0.414$.