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01172_Radioactive Decay (P6).txt
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1995-12-08
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269 b
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19 lines
Assume the isotope decays by positron emission. What is the resulting isotope?
A.
B.
C.
D.
B
Positron emission occurs when a proton decays into a neutron and a positron, leaving the atomic mass unchanged and the atomic number decreased by 1.