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  • 02-05-2021
  • Biology
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Аноним Аноним
  • 02-05-2021

A. absolute

a. radioactivity

b. unstable atom

B. Atoms

1. atom

a. nucleus.

b. electrons.

2.proton

a. neutrons

b. isotopes

3. stable isotopes

a. radioactive isotopes.

b . radioactive decay.

c. parent isotopes.

d. daughter isotopes.

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