Q. For tetrahedral coordination, the radius ratio $ (r^{+}/r^{-}) $ should be
Punjab PMETPunjab PMET 2010The Solid State
Solution:
Radius ratio $\left(r^{+} / r^{-}\right)$
Structural arrangement
$0.155-0.225$
Trigonal planar
$0.225-0.414$
Tetrahedral
$0.414 -0.732$
Octahedral
$0.732 -1.0$
Cubic
| Radius ratio $\left(r^{+} / r^{-}\right)$ | Structural arrangement |
|---|---|
| $0.155-0.225$ | Trigonal planar |
| $0.225-0.414$ | Tetrahedral |
| $0.414 -0.732$ | Octahedral |
| $0.732 -1.0$ | Cubic |