Which substance has the highest melting point?

MCQ

A
$CO$
B
$CO_2$
C
$SiO_2$
D
$P_2O_5$

✓

Answer

$(c) \,CO, CO_2$ and $P_2O_5$ are covalent compounds having their molecular lattice. But $SiO_2$ is a covalent compound having $3-$ dimensional network structure and it has covalent lattice, so $M.P.$ of $SiO_2$ is maximum.

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