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Algebra24601
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Algebra24601
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Mithunahan
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Nurne
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The bigger number is the mass number and the smaller number is the atomic number. Don't decide by what's on the top and bottom it sometimes switches round.
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Real_jenn
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Mithunahan that's incorrect the top number is the atomic mass number and the bottom is the proton number (or atomic number)
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TheConfusedMedic
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t10r
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(Original post by Mithunahan)
The top number is the proton number and the bottom is the atomic mass number.
The top number is the proton number and the bottom is the atomic mass number.
Top is mass number and bottom is atomic number (also known as proton number)/
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ishxxn
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(Original post by Algebra24601)
What are the top and bottom umbers on an element
What are the top and bottom umbers on an element
and
Atomic Number
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AJ2104
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Remember, the atomic number is the number of protons; the atomic mass is the number of protons added to the number of neutrons.
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Nihaj
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its different for different periodic tables. bassicly the bigger number is the mass number
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