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.
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.
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.