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Chemistry, 19.12.2020 02:00 breniljakenotro

Which of the following was an important discovery that marie curie made while studying? large atoms gain mass through radioactivity atoms can change into different atoms with new properties
all radioactive elements give off the same amount of energy
the number of protons and neutrons in an atom never changes
i need this quick!! i cant find it anywhere online and i need help

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