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22-09-2018
Chemistry

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The isotope of an atom containing 31 protons and 39 neutrons suddenly has 2 neutrons added to it. What isotope is created?
A. Gallium-72
B. Yttrium-72
C. Gallium-41
D. Yttrium-41

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22-09-2018

Answer,

A. Gallium-72

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