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Chemistry, 14.07.2019 22:40 hjukhvfd5723
How many neutrons are in the radioactive isotope 40/19? a. 40 b. 19 c. 21 d. 20
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In the particles are arranged in a regular, repeating pattern. a)a crystalline liquid b)a crystalline solid c)all gases d)all solids
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How many neutrons are in the radioactive isotope 40/19? a. 40 b. 19 c. 21 d. 20...
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