MCQ
The geometry of $\left[ Fe ( CN )_6\right]^{3-}$ is ……..
- ATetrahedral
- ✓Octahedral
- CSquare planar
- DTrigonamal bipyramidal
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| List - I | List - II |
| A. Bragg's equation | 1. $\frac{n M }{a^3 N _{ A }}$ |
| B. Density of unit cell | 2. $\frac{\text { Total volume of all spheres in unit cell }}{\text { Volume of unit cell }} \times 100$ |
| C. Packing efficiency | 3. $\frac{r_{C^{-}}}{r_{ A ^{-}}}$ |
| D. Radius ratio | 4. $n \lambda=2 d \sin \theta$ |