Chemical Bonding

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Chemical Bonding

  1. 1. Chemical Bonding Mrs. Kuzara Chemistry 2009-2009
  2. 2. Chemical Bonding Types of Bonding
  3. 3. Chemical Bonding Metallic Bonding & Properties empty d-orbitals high luster   delocalized electrons malleability   ‘sea of electrons’ ductility   attraction between  atoms & sea of electrons
  4. 4. Chemical Bonding Ionic vs. Covalent
  5. 5. Chemical Bonding Ionic vs. Covalent
  6. 6. Chemical Bonding Ionic vs. Covalent
  7. 7. Chemical Bonding Ionic Bonding transfer of electrons  orderly crystal lattice  very strong bond  hard but brittle solids  conduct electricity in  molten or dissolved state formula unit 
  8. 8. Chemical Bonding Covalent Bonding sharing of valence electrons  molecular formula  polar covalent & nonpolar covalent 
  9. 9. Chemical Bonding Intermolecular Forces Molecular Polarity & Dipole-dipole   the attraction between polar molecules depends on electronegativities  polar molecules have a positive pole and  a negative pole
  10. 10. Chemical Bonding Intermolecular Forces Molecular Polarity & Dipole-dipole   Molecular polarity depends on bond orientation
  11. 11. Chemical Bonding Nonpolar Covalent
  12. 12. Chemical Bonding Intermolecular Forces London Dispersion   weakest!  occurs between all atoms & molecules  …even noble gases!
  13. 13. Chemical Bonding Polar Covalent
  14. 14. Chemical Bonding Hydrogen Bonding very strong dipole-  dipole force HF, H2O, NH3  large eN- difference  very high boiling  points

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