Radium and polonium doesn't changed the world.
The discovery (not invention) of polonium and radium didn't changed the history.
Being radioactive and unstable elements they are continuously changed.
Curie's discovery of radium and polonium helped the world because radium changed the way we control skin damage and cancer treatments. Polonium, named after Curie's birthplace, is changing how people use drugs, and tobacco.
Radium and polonium are radioactive natural chemical elements.
Polonium and Radium .
Polonium and radium doesn't affect history.
Polonium and radium are radioactive elements and toxic; they are dangerous.
Radium and polonium are principally alpha emitters.
Yes, radium and polonium are radioactive elements.
The radium and polonium elements were and still are radioactive elements.
Both radium and polonium are radioactive elements and are not stable.
Polonium (Po) and radium (Ra) are two different chemical elements.