Tuesday 10/19/10.  Return Naming Compounds Quiz  Collect Symbol Me Projects  Lewis structures  Metallic Bonding  Hydrogen Bonding  Jeopardy Review.

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Presentation transcript:

Tuesday 10/19/10

 Return Naming Compounds Quiz  Collect Symbol Me Projects  Lewis structures  Metallic Bonding  Hydrogen Bonding  Jeopardy Review

 Atoms form bonds to gain a full shell of valence electrons. (Octet Rule)  If electrons are not involved in bonding, then they are lone pairs.  Each bond is made up of 2 electrons.

 Count up the total # of valence electrons.  If it’s an ion, then add or subtract e - as needed.  Connect all the atoms with single bonds.  Place the remaining electrons as lone pairs around the atom.  Create double or triple bonds if there are not enough electrons to go around.  ALWAYS FOLLOW THE OCTET RULE!!!!

 Draw the Lewis structure for NO 3 -

 Draw the Lewis structure for CCl 3 +

 Draw the Lewis structure for CO 2

 Draw the Lewis structure for N 2 O 4

 Draw the Lewis structure for C 2 N 2 4-

 Draw the Lewis structures for PO 4 3-

 Draw the Lewis structure for OCN -

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