Question:
Which of the following is not an interstitial compound?
Which of the following is not an interstitial compound?
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Interstitial compounds often retain metallic conductivity and high hardness.
Updated On: Apr 28, 2026
- $Sc_2O_3$
- TiC
- $Mn_4N$
- $TiH_{1.7}$
- $Fe_3H$
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The Correct Option is A
Solution and Explanation
Step 1: Concept
Interstitial compounds are formed when small atoms (H, C, N) fit into the lattice voids of transition metals.
Step 2: Meaning
They are usually non-stoichiometric and not typical ionic or covalent compounds.
Step 3: Analysis
TiC, $Mn_4N$, and metal hydrides like $TiH_{1.7}$ are classic interstitial examples. $Sc_2O_3$ is a standard stoichiometric ionic oxide.
Step 4: Conclusion
$Sc_2O_3$ is a normal oxide, not an interstitial compound. Final Answer: (A)
Interstitial compounds are formed when small atoms (H, C, N) fit into the lattice voids of transition metals.
Step 2: Meaning
They are usually non-stoichiometric and not typical ionic or covalent compounds.
Step 3: Analysis
TiC, $Mn_4N$, and metal hydrides like $TiH_{1.7}$ are classic interstitial examples. $Sc_2O_3$ is a standard stoichiometric ionic oxide.
Step 4: Conclusion
$Sc_2O_3$ is a normal oxide, not an interstitial compound. Final Answer: (A)
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