Ionic Bonds Chemistry Mrs. Meemari. Ionic Bonds Chemistry Mrs. Meemari.

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Presentation transcript:

Ionic Bonds Chemistry Mrs. Meemari

Part A: Ions Lewis Dot Structure Stable Octet (or Duet)

The Periodic Table and Atomic Radius

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.

Na , 11 e

Na + , 10e

A Positive Ion (Cation): An atom that has lost one or more electrons. + charge

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

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

A Negative Ion (Anion) An atom that has gained one or more electrons. Negatively (-) charged.

Chlorine Atom  Chlorine Ion

Check your Neighbor When Na, (Z= 11) loses its valence electron, what element does its electron configuration look like? Neon Potassium Beryllium Sodium C. discover the property called inertia.

Check your Neighbor When Na, (Z= 11) loses its valence electron, what element does its electron configuration look like ? Neon Potassium Beryllium Sodium C. discover the property called inertia.

A Stable Octet When the valence shell is full, the atom is stable, less likely to react. Example: Noble (Inert Gases) Kr

Note Atoms tend to react in a way that would lead them to have a stable octet.