Question:
Identify the covalent crystal from the following.
Identify the covalent crystal from the following.
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Covalent (network) crystals have atoms joined by a continuous network of covalent bonds, such as SiO2.
Updated On: Oct 1, 2026
- \(\text{Fe}\)
- \(\text{CH}_4\)
- \(\text{SiO}_2\)
- \(\text{KCl}\)
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Crystals are classified by the particles at lattice points and the forces between them: ionic, metallic, molecular, and covalent (network).
Step 2: Detailed Explanation
\(\text{SiO}_2\) (quartz) is a giant network where each Si bonds to four O atoms, so it is a covalent crystal.
Fe is a metallic crystal, \(\text{CH}_4\) is a molecular crystal held by weak van der Waals forces, and KCl is an ionic crystal.
Final Answer:
\(\text{SiO}_2\) is the covalent crystal, option (C). \[ \boxed{\text{SiO}_2} \]
Crystals are classified by the particles at lattice points and the forces between them: ionic, metallic, molecular, and covalent (network).
Step 2: Detailed Explanation
\(\text{SiO}_2\) (quartz) is a giant network where each Si bonds to four O atoms, so it is a covalent crystal.
Fe is a metallic crystal, \(\text{CH}_4\) is a molecular crystal held by weak van der Waals forces, and KCl is an ionic crystal.
Final Answer:
\(\text{SiO}_2\) is the covalent crystal, option (C). \[ \boxed{\text{SiO}_2} \]
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