Physics, 22.08.2019 00:00 HelenKellerwasaSlutt
An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. it therefore has neutrons in its nucleus.
a. 19
c. 20
b. 39
d. 2
user: radioactive isotopes are used in medicine, power plants, and as tracers.
Answers: 2
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An atom of potassium has an atomic mass of 39 amu and an atomic number of 19. it therefore has neut...
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