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What is one element that has an atomic mass that, when rounded off, does not equal the mass number of its most common isotope?

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  • What is one element that has an atomic mass that, when rounded off, does not equal the mass number of its most common isotope?


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What is one element that has an atomic mass that, when rounded off, does not equal the mass number of its ... the mass number of its most common isotope?
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Positive: 33 %
What is one element that has an atomic mass that, when rounded off, does not equal the mass number of its most ... mass number of its most common isotope?
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Positive: 30 %

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All Periodic Tables give at least the symbol and the atomic number of the element. ... electrons = atomic number Z No. of neutrons = mass ... most common ...
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Positive: 33 %
... Atomic Number 2, s-block, Mass 4.003 ... Helium is the second most abundant element in ... heart of a helium atom - its nucleus. Once it has grabbed ...
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Positive: 28 %
If an atom has 6 protons in its ... the mass number of the most common isotope is equal to the ... Mass number* = atomic mass rounded off * Most common ...
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Positive: 14 %
Similarly the so-called atomic mass number is not a mass; ... 4 He is the most-common isotope of He. ... the numbers in the figure have been rounded off, ...
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Positive: 10 %

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