kalliah15 kalliah15
  • 07-12-2020
  • Chemistry
contestada

What is the mass number of an element that has 8 protons, 9 neutrons and
7 electrons?

Respuesta :

safehouse77777 safehouse77777
  • 07-12-2020

Answer:

17

Explanation:

mass number = # of protons + # of neutrons

Answer Link
ashley988 ashley988
  • 07-12-2020
so the answer to your question will be 16
Answer Link

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