Question:
Which of the following oxide is not Network former?
Which of the following oxide is not Network former?
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Common glass network formers include \(SiO_2\), \(B_2O_3\), \(P_2O_5\), and \(GeO_2\). \(Cr_2O_3\) is not a typical network former.
Updated On: May 7, 2026
- \(SiO_2\)
- \(GeO_2\)
- \(Cr_2O_3\)
- \(P_2O_5\)
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The Correct Option is C
Solution and Explanation
In glass chemistry, oxides are classified as network formers, network modifiers, and intermediates.
Network formers are oxides that can form the basic glass network.
Common network formers include:
\[
SiO_2,
\]
\[
B_2O_3,
\]
\[
P_2O_5,
\]
and
\[
GeO_2.
\]
Silica:
\[
SiO_2
\]
is the most common network former in glass.
Germanium dioxide:
\[
GeO_2
\]
can also form a glass network.
Phosphorus pentoxide:
\[
P_2O_5
\]
is also a network former.
Chromium oxide:
\[
Cr_2O_3
\]
is not generally classified as a network former in the given context.
Therefore, the oxide which is not a network former is:
\[
Cr_2O_3.
\]
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