Which oxide among the following has the highest melting point

[From: ] [author: ] [Date: 12-01-07] [Hit: ]

Which oxide among the following has the highest melting point?
P4O10
Al2O3
MgO
Cl2O7

would it be P4O10?

MgO ~2800 C

Ionic bonds are a lot stronger than the Van der Waal bonds keeping the P4O10 in solid form.

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