Yes. Uranium is a radioactive metal
No: Iodine is not a metal at all, but a nonmetal. It is not necessarily radioactive, but has some radioactive isotopes.
Darmstadtium is a radioactive metal but supplementary data are not known.
Yes, americium is a radioactive metal. This element has no stable isotopes.
Radon and radium are radioactive.
No. Radon is a radioactive noble gas.
Yes, uranium is a radioactive metal.
Most metals are stable and thus not radioactive.
Uranium is a natural chemical element, metal, solid, radioactive, with the symbol U. The name is derived from the planet Uranus.
Nearly 100% of aluminum found in nature is 27Al, which is not radioactive. There are traces found of radioactive 26Al, but they are not significant. Other, synthetic, radioactive isotopes of aluminum exist, such as 25Al.
Radioactive or not, pure cobalt is a gray metal.
The U stands for Uranium which is a radioactive metal and the 238 stands for what number of isotope. It occurs naturally as U-238 with a very small amount of U-235, when U-235 is refined out it is called depleted uranium.