Polonium and radium are two natural chemical elements, highly radioactive, solid, metals, rare, expensive, dangerous, with some useful applications etc.
The radium and polonium elements were and still are radioactive elements.
Radium and polonium are radioactive natural chemical elements.
Polonium and radium are radioactive elements and toxic; they are dangerous.
Yes, radium and polonium are radioactive elements.
Both radium and polonium are radioactive elements and are not stable.
Polonium (Po) and radium (Ra) are two different chemical elements.
Polonium and radium are radioactive chemical elements but they have not the same properties.
Polonium and radium are natural chemical elements, metals, solid, very radioactive.
Radium and polonium are natural radioactive chemical elements, discovered by Pierre and Marie Curie in 1898.
Marie Curie discovered radium and polonium.
Radium is a chemical element Polonium is a chemical element Those two were discovered by Marie Curie
She discovered the elements radium and polonium.