The correct order of melting points of $\mathrm{Al}, \mathrm{Ga}, \mathrm{In}$ is
The correct order of melting points of $\mathrm{Al}, \mathrm{Ga}, \mathrm{In}$ is
$\mathrm{Ga} < \mathrm{In} < \mathrm{Al}$
In $ < \mathrm{Ga} < \mathrm{Al}$
$\mathrm{Al} < \mathrm{Ga} < \mathrm{In}$
$\mathrm{Ga} < \mathrm{Al} < $ In
Solution
The melting points of group 13 elements follow the order:-
$\mathrm{B}>\mathrm{Al}>\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}$
This is due to strong crystalline structure of B and soft metallic nature of the rest of the metals.
Gallium has unusually low melting point due to very high electro positivity.