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

asked Nov 28, 2022 140k views

1 vote

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1 vote

Answer:

I'm pretty sure your answer will be 9

Inteoryx answered Dec 1, 2022

4.1k points

4 votes

Answer:

Step-by-step explanation:

Mass number = proton + neutron

= 4 + 5

= 9

Taras Alenin answered Dec 3, 2022

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