Respuesta :
Answer:
The number of protons plus the number of neutrons
Explanation:
Answer:
The mass number is equal to the total number of protons and neutrons in the nucleus of an atom.
Explanation:
Answer:
The number of protons plus the number of neutrons
Explanation:
Answer:
The mass number is equal to the total number of protons and neutrons in the nucleus of an atom.
Explanation: