About the sample
This is a commercial sample from one of the research laboratories. It is packed in an ampoule under an air atmosphere. The main reason for such a display is not to protect the iodine from the air, but to keep it closed. Otherwise, with time, it can diffuse through plastic and contaminate the surrounding.
ρ / g/cm34.94
tt, mp / °C113.7
tv, bp / °C184.3
Electronegativity, (X)2.66
Crystal structureOrthorhombic
Extended informationhttps://www.webelements.com/iodine/