Question 1
Silver chloride crystallizes with the sodium chloride (rock salt) structure. The length of a unit cell edge is 555 pm. What is the density of AgCl?
◦
5.57 g/cm3
◦
4.19 g/cm3
◦
2.79 g/cm3
◦
2.10 g/cm3
◦
1.39 g/cm3
Question 2
Sodium oxide (Na2O) crystallizes in a structure in which the O2– ions are in a face-centered cubic lattice and the Na+ ions are in tetrahedral holes. The number of Na+ ions in the unit cell is:
◦
2◦
4◦
6◦
8◦
None of these are correct