joscrist3
joscrist3 joscrist3
  • 13-04-2017
  • Physics
contestada

How many neutrons make up one of these potassium atoms?

19
20
38
58

Respuesta :

Аноним Аноним
  • 13-04-2017
b 20
( i took the test)
Answer Link
yoloswaggs51
yoloswaggs51 yoloswaggs51
  • 13-04-2017
To find the number of neutrons you take the atomic mass, 39, and subtract the number of protons, 19.
so 39-19=20
potassium has 20 neutrons
Answer Link

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