Here's why:

* Sublimation: Iodine has a unique property called sublimation. This means it can transition directly from a solid to a gas without becoming a liquid at standard atmospheric pressure.

* Appearance: Solid iodine is a dark, purplish-black crystalline substance.

* Melting point: Iodine has a relatively low melting point of 113.7 °C (236.7 °F). So, if you heat it up, it will melt and become a liquid.

Let me know if you have any other questions!