The chemical equation for the sublimation of solid iodine to gaseous iodine is:

I₂(s) → I₂(g)

Here's what it means:

* I₂(s) represents solid iodine.

* I₂(g) represents gaseous iodine.

Sublimation is a process where a solid directly changes into a gas without going through a liquid phase. This is possible for iodine because it has a relatively high vapor pressure at room temperature.