At what temperature does a perfect crystalline solid have S=0?

Question

Quizplus · Accepted Answer

The third law of thermodynamics states that the entropy of a perfect crystalline solid at absolute zero temperature is zero. This is because at absolute zero, the molecules of the solid come to rest, and there are no available energy states for the molecules to occupy. As a result, there is only one way for the atoms in a perfect crystal lattice to be arranged, and that arrangement has zero entropy. Therefore, the correct answer is option A) 0 K.

At What Temperature Does a Perfect Crystalline Solid Have S=0