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How many neutrons does an element have if its atomic number is 48 and its mass number is 153?
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How many neutrons does an element have if its atomic number is 48 and its mass number is 153?

User Ruben Steins
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105. the atomic mass of an atom are the protons + neutrons. the atomic number of an atom is the number of protons. so, to find the neutrons, subtract 153 - 48 to get 105.
User Tangrammer
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