Question

Define crystalline substance

Answer 1

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$\huge\color{orange}\boxed{Answer}$

$<b><i><u>✔$The third law of thermodynamics states that every substance has a positive entropy, but at zero Kelvin the entropy is zero for a perfectly crystalline substance. The third law introduces a numerical scale for the entropy. Stated succinctly: S(0) = 0 for all perfectly ordered crystalline materials.

Answer 2

Hey mate your answer is here

The Atoms of a the elements in a crystalline

form have a Specific Arrangements.

example: In diamond crystal every carbon

atom has four atoms of carbon at specific

distance around it.

Hope it will help you

Thanks