Respuesta :
Answer:
7 is answer.
Explanation:
therefore, the mass number of an atom with 3 protons,4 neutrons,and 3 electrons is 7.
I hope it's helpful!
Answer:
7 is answer.
Explanation:
therefore, the mass number of an atom with 3 protons,4 neutrons,and 3 electrons is 7.
I hope it's helpful!