Electron Dot Structure and the Periodic Table

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Presentation transcript:

Electron Dot Structure and the Periodic Table H. Chemistry Mrs. Coyle

Valence Electrons Valence electrons are the electrons in the highest occupied energy level of the atom. Valence electrons are the only electrons generally involved in bond formation.

Electron Configuration of Sodium 1s2 2s2 2p6 3s1 Which is the valence electron for Na? Answer: 1s2 2s2 2p6 3s1

Na , 11 e

Electron Dot Structure or Lewis Dot Diagram (Gilbert Lewis) A notation showing the valence electrons surrounding the atomic symbol.

Oxygen Atom

Fluorine Atom - Chlorine Atom

Elements within the same group have the same electron-dot structure.