If the distance between Na+ and Cl- ions in NaCl crystal is 265 pm, then the edge length of the unit cell will be:
Correct answer: B. 530 pm
- A. 265 pm
- B. 530 pm
- C. 795 pm
- D. 132.5 pm
Explanation
In the face-centered cubic (FCC). structure of NaCl, the edge length (a) of the unit cell is twice the distance between adjacent ions. Therefore, the edge length is 2 × 265 pm = 530 pm.
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