Question:
Which of the following has spinel crystal structure?
Which of the following has spinel crystal structure?
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Spinel structure has general formula \(AB_2O_4\). Magnesium aluminate \((MgAl_2O_4)\) is a typical spinel.
Updated On: May 7, 2026
- \(Fe_2O_3\)
- \(MgAl_2O_4\)
- \(CoO\)
- \(Na_2O\)
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The Correct Option is B
Solution and Explanation
Spinel is an important crystal structure in ceramic materials.
The general formula of a normal spinel is:
\[
AB_2O_4.
\]
In this structure, divalent cations occupy one type of site and trivalent cations occupy another type of site.
Magnesium aluminate has the formula:
\[
MgAl_2O_4.
\]
Here:
\[
Mg^{2+}
\]
acts as the divalent cation, and
\[
Al^{3+}
\]
acts as the trivalent cation.
Thus, magnesium aluminate exactly fits the spinel formula:
\[
AB_2O_4.
\]
Therefore, the compound having spinel crystal structure is:
\[
MgAl_2O_4.
\]
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