Answer
Orthorhombic
Work Step by Step
From the figure, we can see that all the angles in the unit cell are $90^{\circ}$ and all the edges are of different length, that is,
$a \ne b \ne c$
$\alpha = \beta = \gamma = 90^{\circ}$
Therefore, the unit cell of molecular iodine is Orthorhombic.
