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iogann1982 [59]
3 years ago
14

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

Chemistry
2 answers:
djverab [1.8K]3 years ago
4 0

Answer:

Atomic Number    Symbol    Atomic Weight  

10                             Ne               20.179

11                             Na                 22.98977

12                          Mg                  24.30

13                          Al                 26.98154

Lisa [10]3 years ago
3 0

Answer:

The sum of the protons and neutrons

Explanation:

mass number= proton number + neutron number

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