it is a solid
At room temperature, KCl is a metal (solid).
There is no gaseous phase in ionic compounds at room temperature and pressure.
Potassium is a solid at room temperature and pressure, so it is in its solid phase. It has a metallic appearance and is a soft, silvery-white alkali metal.
Potassium at room temperature is a solid.
At room temperature, hydrogen is in the gaseous phase.
At standard temperature and pressure, potassium is a solid.
Potassium chloride is a white crystalline solid at room temperature.
At room temperature (~25°C), germanium is in the solid crystalline phase.
The element hydrogen is in the gas phase at standard temperature and pressure.
Gas at room temperature
Potassium is in thee solid state at standard temperature and pressure, which is sometimes loosely called "room temperature".
iodine is solid at room temperature