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Valence Electron

Bohr model of a chlorine atom with valence electrons in red
Bohr model of a chlorine atom. Valence electrons are shown in red and core electrons are shown in black. Khan Academy, CC BY-NC-SA 3.0
  • electrons in the outermost shell of an atom are most easily transferred or shared with other atoms
  • the outermost shell of an atom is called the valence shell
  • any electrons in the valence shell are called valence electrons
  • any electrons which are not in the valence shell are called core electrons

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