gabrielllajoy gabrielllajoy
  • 20-09-2017
  • Chemistry
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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

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E3nigma
E3nigma E3nigma
  • 26-09-2017
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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