posted by Sarah H on .
Which of the following conditions MUST be true for the entropy of a pure solid to be zero?
a) T must be 0 K
b) The solid must be crystalline and not amorphous
c)the solid must be perfectly ordered
d) the solid form must be an element
S=0 (s is entropy)
It can be more than one of these choices, its a "check all that apply" question. Are there any other options that must apply for S=0??