jonathanpaul2404 jonathanpaul2404

23-09-2021
Chemistry

contestada

¿Cuál es el número de masa de un átomo con 5 protones y 7 neutrones?

Respuesta :

anasweeney43 anasweeney43

01-10-2021

Answer:

Número de masa: 12

Explanation:

Mass of an atom = protones + neutrons

5+7=12

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