Silicon(IV) oxide is a covalently bonded compound. Which statements are correct? 1 Silicon atoms form four single bonds in silicon(IV) oxide. 2 Oxygen atoms form two double bonds in silicon(IV) oxide. 3 Silicon(IV) oxide has a high melting point. 4 Silicon(IV) oxide contains one silicon atom and four oxygen atoms.
A.
1 and 2
B.
1 and 3
C.
2 and 3
D.
3 and 4
Exam No：0620_s24_qp_23 Year：2024 Question No：6
Answer:
B
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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