two substances with crystal structures can be different even if the substances contain the same chemical…

two substances with crystal structures can be different even if the substances contain the same chemical elements in the same ratio. these substances have the same composition, but they are different because their atoms are arranged in different ways. select the two models that represent substances with the same chemical formula but different arrangements of atoms. c si diamond silicon graphite
Answer
Explanation:
Step1: Identify carbon - based substances
Diamond and graphite are both made of carbon atoms only. Silicon is made of silicon atoms.
Step2: Recall allotropes concept
Allotropes are substances with same chemical formula but different atomic arrangements. Diamond and graphite are allotropes of carbon.
Answer:
Diamond, Graphite