Solid State — Hard (Advanced)

Practice 100 questions on Solid State — Hard (Advanced). Includes: Which of the following have coordination number 12?; For n atoms in close-packed structure, which…; The radius of an FCC atom is r. Its edge length a is:. Free quiz on NoteTube.

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1.
Which of the following have coordination number 12?
2.
For n atoms in close-packed structure, which statements are correct?
3.
**Assertion (A):** Schottky defect decreases the density of a crystal. **Reason (R):** In Schottky defect, equal numbers of cation and anion vacancies are created.
4.
**Assertion (A):** Frenkel defect changes the density of ionic crystals. **Reason (R):** In Frenkel defect, a cation moves from its lattice site to an interstitial site, and the overall number of ions in the crystal changes.
5.
The radius of an FCC atom is r. Its edge length a is:

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