Diamond and graphite have giant covalent structures of carbon atoms. Which statement describes graphite?
A.
It has a strong, rigid three-dimensional structure.
B.
It has four strong covalent bonds between each carbon atom.
C.
It has layers, which can slide over each other.
D.
It has no delocalised electrons so does not conduct electricity.
Exam No：0620_w24_qp_22 Year：2024 Question No：8
Answer:
C
Knowledge points:
2.6.1. Describe the giant covalent structures of graphite and diamond
2.6.2.1. graphite as a lubricant and as an electrode
2.6.2.2. diamond in cutting tools
2.6.3. Describe the giant covalent structure of silicon(IV) oxide
2.6.4. Describe the similarity in properties between diamond and silicon(IV) oxide, related to their structures
Solution:
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