Polonium was discovered by Marie Curie and Pierre Curie in 1898.
Radium was discovered by Marie Curie, Pierre Curie and G. Bemont also in 1898.
Of course, many scientists worked with radium and polonium.
Marie Curie
Radium and polonium are radioactive natural chemical elements.
Yes, radium and polonium are radioactive elements.
Radium and polonium are principally alpha emitters.
Polonium and radium are radioactive elements and toxic; they are dangerous.
Polonium and radium doesn't affect history.
Radium and polonium doesn't changed the world.
Both radium and polonium are radioactive elements and are not stable.
Polonium and radium are radioactive chemical elements but they have not the same properties.
Polonium (Po) and radium (Ra) are two different chemical elements.
Polonium and radium are natural chemical elements, metals, solid, very radioactive.