At room temperature plutonium is a solid, radioactive metal, very dense.
At room temperature plutonium is a solid metal.
Neptunium is a solid metal at room temperature, but undergoes beta decay becoming plutonium within a few days.
At room temperature plutonium is a solid metal.
Plutonium is a solid at room temperature.
At room temperature plutonium is a solid metal.
Plutonium is a solid metal at room temperature.
At room temperature plutonium is a solid metal.
At room temperature plutonium is a solid radioactive metal.
It is simply room temp. An example of room temp is usually 68° to 75°
At room temperature plutonium is a solid metal.
The fresh surface of plutonium is metallic, silvery.
Nothing important at room temperature and with bulk plutonium; some formation of plutonium oxide.