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21-09-2021
Chemistry

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The mass of all elements on the periodic table are based on which element?

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21-09-2021

Answer:

The sum of the protons and neutrons

Explanation:

mass number= proton number + neutron number

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21-09-2021

Answer:

Atomic Number Symbol Atomic Weight

10 Ne 20.179

11 Na 22.98977

12 Mg 24.30

13 Al 26.98154

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