brennie21 brennie21

24-09-2020
Chemistry

contestada

An atomic model shows 19 protons, 20 neutrons, and 19 electrons. What is the mass number of the atom?

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Respuesta :

learner6382 learner6382

24-09-2020

Answer:

32

Explanation:

i just know bc i already answered this question... and i dont have an explination

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