Which of the following is not true about the ionic solids?
| 1. | Bigger ions form the close packed structure |
| 2. | Smaller ions occupy either the tetrahedral or‘the octahedral voids depending upon their size |
| 3. | Occupation of all the voids is not necessary |
| 4. | The fraction of octahedral or tetrahedral voids occupied depends upon the radii of the ions occupying the voids |
