What makes one element different from another?

Its number of protons.

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  1. Its number of protons ✔
  2. Its color
  3. Its temperature

Why: An element is defined by its atomic number, the number of protons in its atoms.

Huh, didn't know that: An element is defined by its atomic number, the number of protons in its atoms.

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Protons call the shots!
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References

Answer: Its number of protons. An element is defined by its atomic number, the number of protons in its atoms.

  1. Chemistry en.wikipedia.org/wiki/Chemistry
    characterized by its particular number of protons in the nuclei of its atoms
    Checked 2026-11-07.

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