8.2 Nature of Covalent Bonding

• Do Now – Build an oxygen molecule and an ammonia (NH3) molecule- Draw your model in your notes

• Objective – Octet Rule, Single/Double/Triple Covalent Bonds, Coordinate

Covalent Bonds

• HW – Start your 8.2 questions on page 229

Oxygen Ammonia

The Octet Rule BondingElectron sharing usually occurs so that atoms attain the electron configuration of noble gases.

Single Bonds

Ammonia

Unshared or Lone Pair

Double Bonds

• Carbon Dioxide

Double Bonds

• Do Now – Pass in 8.1 and 8.2 Homework Assignments

• Objective – Practice Molecular Models and Determining Structural Formulas

• Homework – Pg. 229 # 17 – 19 , 21, 22

• Do Now – Review previous homeworks • Any Questions???

• Objective – Finish 8.2 • Triple Bonds, Coordinate Covalent Bond, Bond

Dissociation Energy, Resonance

• Homework – Pg. 229 # 17-19, 21,22

Water Methanol

Ethylene

Butane Butanol

Glucose

Citric Acid

Triple Bonds / Coordinate Covalent Bonds

Nitrogen Molecule

Carbon Monoxide

Triple Bonds / Coordinate Covalent Bonds

Bond Dissociation Energy

• Energy required to break the bond between two covalently bonded atoms.

Resonance

Resonance

• Possible to draw two or more valid electron structures.

Exceptions to the Octet Rule