Question Detail

CHM 102 P block elements Objective Question
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Question

What is the characteristic structure of silicon dioxide (SiO₂) compared to carbon dioxide (CO₂)?
Options
A Both are simple molecular structures.
B CO₂ has a giant covalent structure, while SiO₂ is simple molecular.
C CO₂ is a linear molecule, while SiO₂ forms a giant covalent structure.
Correct Answer
D Both form giant ionic structures.
Correct Answer

Option C is the correct answer.

Detailed Explanation

Page 20 illustrates CO₂ as a linear molecule (O=C=O) and SiO₂ as a giant network structure. Page 19 also states that 'Carbon dioxide exists as a gas at room temp & pressure' (implying simple molecular), while 'The dioxides of the other elements exist as crystalline solids with high melting points with either giant covalent or giant ionic structures' (for SiO₂ this is giant covalent).

Hint

Compare the bonding and physical state of CO₂ and SiO₂.

Question Info

Course: CHM 102
Topic: P block elements
Type: Objective
Difficulty: Not specified
Question 1906 of 1999
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