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YO HELP When the elements on the periodic table are arranged by increasing atomic numbers, the atomic mass generally increases as the atomic number increases. For some elements, however, the atomic mass
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YO HELP

When the elements on the periodic table are arranged by increasing atomic numbers, the atomic mass generally increases as the atomic number increases. For some elements, however, the atomic mass of the element is lower than the atomic mass for the element that came before it. Explain how this could be possible.

User Pierre Tautou
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Step-by-step explanation:

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User Mathieson
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