Replace this sample text with the prompt or directions for this item.
The atomic number of an element is the number of
The atomic mass is the number of
The electrons in the outermost shell are known as the
protons protons and neutrons
valence electrons

[SOLVED] Replace this sample text with the prompt or directions for this item.
The atomic number of an element is the number of
The atomic mass is the number of
The electrons in the outermost shell are known as the
protons protons and neutrons
valence electrons
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Suggested Answer

Answer:1. Protons2. Protons and Neutrons 3. Valence electrons Explanation: