"A perfect crystalline substance has an entropy of zero at absolute zero" is a statement of

At absolute zero, Si acts as

At absolute zero, Si acts as

(A): Entropy of a perfect crystalline substance at absolute zero is zero (R ): At absolute zero translation kinetic energy of a system is zero.

(A): Entropy of a perfect crystalline substance at absolute zero is zero (R ): At absolute zero translation kinetic energy of a system is zero.

What is absolute zero?