Which statement about silicon dioxide, $$\(\mathrm{SiO}_{2}\)$$, is correct?
A.
It conducts electricity because it contains free electrons.
B.
It is a macromolecule with four oxygen atoms bonded to each silicon atom.
C.
It is a simple covalent molecule.
D.
Its structure is similar to graphite.
Exam No：0620_w20_qp_21 Year：2020 Question No：8
Answer:
B
Knowledge points:
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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