Question

question 5 (5 points)
the radius ratio range for tetrahedral coordination is...
0.155 - 0.225 (tiny cation to large anion)
0.225 - 0.414 (small cation to large anion)
0.732 - 1.0 (similar but smaller cation to anion)
1.0 (same size cations and anions)
1.0 - 1.4 (bigger cation than anion)

Explanation:

In crystallography, the radius - ratio rule helps determine the coordination number of an ion in a crystal lattice. For tetrahedral coordination, the radius ratio (cation radius/anion radius) range is 0.225 - 0.414.

Answer:

B. 0.225 - 0.414 (small cation to large anion)