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An atom of unknown element Z has mass number of 39 and an atomic number of 18. How many protons and how many neutrons are in this atom? Show your work
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An atom of unknown element Z has mass number of 39 and an atomic number of 18. How many protons and how many neutrons are in this atom? Show your work

User NDJ
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1 Answer

6 votes

Answer:

proton:18

neutron:39-18=21

User Jeremiahs
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