Uranium is used
UraniumIronLeadCadmiumetc.
Most commonly used material to produce nuclear energy in Uranium.
Uranium
uranium
Plutonium
Urainium
B. Uranium
Uranium mostly, sometimes a mixture with plutonium
Uranium 235 Plutonium
Yes, the radioactive decay of Uranium-235 is used to produce power in nuclear power plants.
I think you mean Uranium /U/.
Uranium 235 or Plutonium 239