Which element of Group 17 exists as a solid at 25°C and standard pressure?

Iodine and Astatine, they're both solid at room temperature and standard pressure (by referring to period table)

Which element of Group 17 exists as a solid at 25°C and standard pressure?
Iodine. It's melting point (solid to liquid) is 113.7 degrees C., so it is a solid at 25 degrees C.
Reply:Astatine since it is the lowest down on the group and has the most metallic properties in Group 17





Also its standard state is solid at 298° kelvin. (25° celsius)

innia