MiheyKuz6052 MiheyKuz6052

01-02-2022
Chemistry

contestada

an atom has 70 protons, 70 electrons, and 99 neutrons. what is the mass number? group of answer choices

Respuesta :

emmadaron13 emmadaron13

08-02-2022

Answer:

169

Explanation:

protons+neutrons=atomic mass

70+99=169

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