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An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?

An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?
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An atom of lead has the atomic number 82 and a mass number of 207. How many neutrons does this atom of lead have?

User Arjun Krishna P R
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1 Answer

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Subtract 207 from 82 which is the number of protons and electrons. the answer is 125 neutrons
User Pete Keen
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