Radium is not used to produce energy.
Your question is meaningless. Radium IS a radioactive element, and its power depends on the context. If you mean "is there an element more radioactive than radium" then yes, there are many, e.g. astatine.
The radioactive element that begins with the letter R is radium. Radium is a highly radioactive element and is found in uranium ores. It emits alpha, beta, and gamma radiation.
Radium is an element; it has no sub-parts. Radium is a radioactive element, so it will slowly and spontaneously decay into other elements.
Radium is a chemical element, not a compound.
Radium
Uranium is the first element known to be radioactive. It was discovered by Henri Becquerel in 1896.
The radioactive artificial element curium (Cm).
Exposure to radium poses a hazard due to its radioactive properties. It can emit harmful radiation, leading to potential health risks such as an increased likelihood of developing cancer and other radiation-related illnesses. It is essential to limit exposure to radium and follow safety protocols when working with this substance.
The artificial radioactive element curium (Cm).
the main element extracted was radium
Radium is a very dangerous radioactive element.
The 88th element on the periodic table is radium. The symbol for radium is Ra. This element is radioactive and emits three types of radiation.