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What is the relationship between atomic number and atomic mass number?

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Answer:

Atomic number is the number of protons that are inside that atom. This helps identify which element an atom is. Atomic mass is the number of protons and neutrons inside an atom. Atomic Mass Number = Atomic Number + Number of Neutrons.

Step-by-step explanation:

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User Gsteiner
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Atomic Mass Number = Atomic Number + Number of Neutrons
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User Ahnlabb
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