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How many neutrons does an element have if its atomic number is 55 and its mass number is 150?
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How many neutrons does an element have if its atomic number is 55 and its mass number is 150?

User Rob Glassey
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95 neutrons hope this helps
User Galethil
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With an atomic number of 55, that means there are 55 protons. Because electrons do not count towards atomic weight, the element would have 150-55 neutrons. So, 95 neutrons.
User Kingk
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