Iodine is a solid at room temperature.
In its pure form, iodine appears as dark gray or black shiny crystals. When heated, these crystals can transition directly into a gas in a process known as sublimation. This means that while iodine is primarily found as a solid at standard conditions, it can easily change states with variations in temperature. Additionally, during certain conditions, such as when mixed with other elements or compounds, iodine can also exist in a liquid state. However, under normal conditions, iodine is classified as a solid.