uncollin2003 uncollin2003

13-11-2017
Chemistry

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An atom with 4 protons, 5 neutrons, and 4 electrons has an atomic mass of _____ amu. (Enter a whole number.)

SOMEONE PLEASE HELP

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13-11-2017

I believe it would be the sum of protons & neutrons which equals 9 amu....

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Seadancer Seadancer

13-11-2017

atomic mass equals the number of protons plus number of neutrons equals 4+5 = 9 amu

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