When Marie Curie Isolated uranium from pitchable, she realized that the [itchable was more radioactive than the uranium she had extracted. What did she conclude about her observations?
pitchblende itself is a radioactive element
the pitchblende sample contained an unknown radioactive the pitchblende sample was defected ***
pitchblende should be used as radiation therapy
3 answers
Yes, in fact it was Thorium.
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1. C
2. B
3. B
4. D
Unit 4 lesson 7
2. B
3. B
4. D
Unit 4 lesson 7
1 answer