A crystal of Lead (II) sulphide has NaCl structure. In this crystal the shortest distance between the Pb^(2+) ion and S^(2-) ion is 297 pm. What is the length of the edge of the unit cell in lead sulphide ? Also calculate the unit cell volume.

A crystal of Lead (II) sulphide has NaCl structure. In this crystal th

1.	A crystal of Lead (II) sulphide has NaCl structure. In this crystal the shortest distance between the Pb^(2+) ion and S^(2-) ion is 297 pm. What is the length of the edge of the unit cell in lead sulphide ? Also calculate the unit cell volume.
Answer» SOLUTION :Edge 'a' of UNIT CELL = 2 x Distance between `Pb^(2+)` and `S^(2-)`ions .