gisselleruiz2cool gisselleruiz2cool

13-01-2021
Chemistry

contestada

12. What is the mass number of an atom that has 4 protons, 4 electrons, and 5 neutrons?

Respuesta :

yazewers yazewers

19-01-2021

Answer:

9

Explanation:

mass number = protons + neutrons

= 4 + 5 = 9

Answer Link

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