cowboysforever2002 cowboysforever2002
  • 12-05-2020
  • Physics
contestada

What is the mass number of a
neon isotope that has 9
neutrons? *

​

Respuesta :

AL2006
AL2006 AL2006
  • 12-05-2020

Neon is element #10, so every neon atom has 10 protons in the nucleus.

If it also has 9 neutrons in there, then its mass number is (10 + 9) = 19 .

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