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What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons? 86 28 58 56

What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons? 86 28 58 56
asked 48.5k views
9 votes
What is the atomic mass of an atom that contains 28 protons, 28 electrons, and 30 neutrons?

86
28
58
56

asked
User JoshD
by
8.2k points

1 Answer

12 votes
you add (only) the protons and neutrons, so the answer here is 58
answered
User Oleg Afanasyev
by
8.1k points
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