If an atom has 4 protons, 5 neutrons, and 4 electrons, what is the mass number of this atom? How do you know??

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asked Oct 10, 2019 99.3k views

1 Answer

Benjamin Kovach · Answer 1 · 2019-10-15T14:06:01+0000

Mass number is no of protons and neutrons so it will be 5 and 4 which will give you 9 you'll know because once you get the equation you'll get the answer

If an atom has 4 protons, 5 neutrons, and 4 electrons, what is the mass number of this atom? How do you know??

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