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OpenStudy (anonymous):
The mass number of an atom is obtained by totaling the number of _____ and _____. (1 point) electrons and protonselectrons neutronsprotons and neutrons neutrons and isotopes
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OpenStudy (anonymous):
total number of protons and neutrons in the nucleus
OpenStudy (anonymous):
You get the mass when you add up the number of protons and neutrons in the core. The electrons do not matter in that calculation.
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