Chemistry, 10.02.2021 17:50, xuzixin2004

DONT HAVE MUCH TIME 4 MIN 21. The number of protons in an element is called the number.
22. Irene Curie used as the source of alpha particles for her research.
23. Uranium goes through decay (a number) times to produce
Plutonium.
24. is a raw Uranium ore which was central to the discovery of radioactivity.
25. The was cited in the letter signed by Einstein as having ore with
high concentrations of U-235.

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DONT HAVE MUCH TIME 4 MIN 21. The number of protons in an element is called the number.
22....