CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY CHARLES D. WINTERS / SCIENCE PHOTO LIBRARY
I2) is a non-metallic element of the halogen group, which also includes chlorine and fluorine. It is a solid at room temperature, but readily forms a violet vapor when heated. Passing from a solid to a gas without a liquid phase is known as sublimation.'.
Model release not required. Property release not required.