dtgarcia928 dtgarcia928

13-10-2020
Chemistry

contestada

an atom has 79 protons, 78 electrons and a mass number of 118. how many neutrons does this atom have

Respuesta :

Justtdoingwork Justtdoingwork

21-10-2020

Answer:

39

Explanation:

Electrons weigh almost nothing, so their mass doesn't really matter for these types of problems. Just subtract 118-79 to find the remaining mass which is for the neutrons.

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