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The atomic number of gold (au) is 79, and the atom has a mass number of 197. how many neutrons are present in the atom of gold?

User Treisha
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An atom of gold has 118 neutrons
User Jelani
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118 neutrons. You subtract the 79 protons from the atomic number of 197. This is because the number of neutrons + the number of protons equals the atomic number.

User Poporul
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