kimberly311015 kimberly311015

20-08-2021
Chemistry

contestada

Tell me the mass number of an atom with 4 protons, 5 neutrons, and 2 electrons.

Respuesta :

harpernatalie66 harpernatalie66

20-08-2021

Answer:

I'm pretty sure your answer will be 9

Answer Link

aayu0302 aayu0302

20-08-2021

Answer:

9

Explanation:

Mass number = proton + neutron

= 4 + 5

= 9

Answer Link

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