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Determine the number of protons and neutrons in an isotope of bromine (br) with a mass number/atomic mass of 79. (the atomic number of bromine is 35.)
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Determine the number of protons and neutrons in an isotope of bromine (br) with a mass number/atomic mass of 79. (the atomic number of bromine is 35.)

User Chris Hines
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44 neutrons and 35 protons. The number of neutrons you have is equal to the atomic mass minus the atomic number.
User Xion
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