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21 November, 13:28

There are two naturally occurring isotopes of indium: indium-113 and indium-115. How many neutrons are in a single atom of indium-115?

49

66

115

164

+1
Answers (1)
  1. 21 November, 15:50
    0
    There are 66 neutrons in a single atom of indium-115. The atomic number of indium-115 is 49, meaning there are 49 protons. Then the atomic mass is 115, so 115-49 = 66.
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