Ionic Bonds

• Ionic Bonds- is a type of chemical bond that involves a metal and a nonmetal ion through electrostatic attraction. In short, it is a bond formed by the attraction between two oppositely charged ions.

Why do bonds form?

• Whenever a bond is formed there is a release of energy as it becomes more stable• Stable = good = energy

• Whenever a bond is broken there is a absorption of energy as it becomes less stable

• Not stable = bad = loss of energy

• http://upload.wikimedia.org/wikipedia/commons/7/75/Ionic_bonding_animation.gif

Valence Electrons

• Valence electrons: are the electrons that are found in the outer most electron shell or energy level of a atom.

• Valence electrons can be found on your periodic table of elements.

Gilbert Lewis

• Gilbert Lewis was an Americanphysical scientist that is creditedfor the Lewis dot diagrams

• Lewis also coined the term Full Octet of electrons stating that all atoms want to have a fullouter most energy level

Ionic Bonds

• For an ionic bond to from the less electronegative atom (the metal) will transfer its valence electron or electrons to a more electronegative atom (the nonmetal)

ex

NaCl MgS

With your partner draw out the Lewis dot diagrams following

Be2+ K1+ Cl1- O2-

MgS LiCl BeF2