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the isotope to 14 / 87 Fr decays by u-emission. What isotope is found? A. 1/0...

the isotope to 14 / 87 Fr decays by u-emission. What isotope is found?

A. 1/0 n
B. 4/2 He
C. 2/1 H
D. 3/1 H
E. 1/1 H

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