Both radium and polonium are radioactive elements and are not stable.
Polonium and radium are continuously studied, but not so much.
Any link between Dalton and polonium&radium.
Of course, many scientists worked with radium and polonium.
Any link exist between X-rays and polonium&radium.
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.
Polonium and radium are radioactive chemical elements but they have not the same properties.
Polonium (Po) and radium (Ra) are two different chemical elements.