Respuesta :

Atoms of the same element always have the same number of protons (atomic number). So, it’s atomic number.
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The atomic number remains the same for all atoms of the same element.

The atom is composed of;

  • Electrons
  • Protons
  • Neutrons

The electrons are found in the orbit while protons and neutrons are found in the nucleus of the atom.

The number of protons in an atom is its atomic number. It is the identity of an element. All atoms of the same element must have the same atomic number even though they may differ in mass number.

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