3. how did the curies discover new elements in pitchblende? (1 point) * a. they realized that pitchblende…

3. how did the curies discover new elements in pitchblende? (1 point) * a. they realized that pitchblende was highly radioactive and that uranium alone could not be the source of all the radiation b. they noticed that pitchblende glows in the dark c. they used several tons of pitchblende to observe that pitchblende is too heavy to consist only of uranium d. they used special pitchblende from poland and named it polonium

3. how did the curies discover new elements in pitchblende? (1 point) * a. they realized that pitchblende was highly radioactive and that uranium alone could not be the source of all the radiation b. they noticed that pitchblende glows in the dark c. they used several tons of pitchblende to observe that pitchblende is too heavy to consist only of uranium d. they used special pitchblende from poland and named it polonium

Answer

Brief Explanations:

The Curies realized pitch - blende's high radioactivity and that uranium couldn't account for all of it, which led them to discover new elements. Pitch - blende glowing in the dark is not the main discovery method. Using its weight or using special pitch - blende from Poland are not the key reasons for discovery.

Answer:

A. They realized that pitchblende was highly radioactive and that uranium alone could not be the source of all the radiation