Monday, November 5
• Take out your “VSEPR Theory” notes and new
piece of paper
• Marshmallow lab tomorrow- Thank you
Brianna L and Kristi H for donating supplies.
• Test Thursday, November 8!
Tuesday, November 6
• Take out your notes from Chapter 6: Chemical
Bonding
• When finished with lab today, begin working
on homework questions.
• Reminders:
• Ch. 6 Review Homework due tomorrow
• Test Thursday, November 8!
Wednesday, November 7
• Take out you Chapter 6 Review homework.
• Reminders:
• Test Thursday, November 8!
•
•
•
•
Molecular Geometry
Chapter 6 Vocab
Lewis Structures
Notes
Thursday, November 8
• Turn in your Chapter 6 Review homework on
front counter.
• When finish test, complete Ch. 7 Vocab words.
Chemical Bonding Lab
Chemical Formula
1. H2O
2. NH3
3. CH4
4. C2H6
5. N2
6. CH2O
Lewis Structure
Molecular Sketch
Molecular Geometry
VSEPR Theory
Valence Shell Electron Pair Repulsion
VSEPR Theory
• Predicts the molecular shape of a bonded
molecule
• Electrons around the central atom arrange
themselves as far apart from each other as
possible
• Unshared pairs of electrons (lone pairs) on the
central atom repel the most
• So only look at what is connected to the central
atom
These are for molecules with
only paired electrons around
the central atom.
Linear
• 2 atoms attached to center atom
• 0 unshared pairs (lone pairs)
• Bond angle = 180o
• Type: AB2
• Ex. : BeF2
Linear
• BeH2
• CO2
Trigonal Planar
• 3 atoms attached to center atom
• 0 lone pairs
• Bond angle = 120o
• Type: AB3
• Ex. : AlF3
Trigonal Planar
• BCl3
• BH3
Tetrahedral
• 4 atoms attached to center atom
• 0 lone pairs
• Bond angle = 109.5o
• Type: AB4
• Ex. : CH4
Tetrahedral
• PO4
Trigonal Bipyramidal
• 5 atoms attached to center atom
• 0 lone pairs
• Bond angle =
– equatorial -> 120o
– axial -> 90o
• Type: AB5
• Ex. : PF5
Trigonal Bipyramidal
• PCl5
Octahedral
• 6 atoms attached to center atom
• 0 lone pairs
• Bond angle = 90o
• Type: AB6
• Ex. : SF6
These are for molecules with
both paired and unshared
(lone) pairs of electrons
around the central atom.
Bent/Angular
• 2 atoms attached to center atom
• 1 or 2 lone pairs of electrons
• Bond angle = 104.5o
• Type: AB2E2
• Ex. : H2O
Bent/Angular
• NO2
Trigonal Pyramidal
• 3 atoms attached to center atom
• 1 lone pair
• Bond angle = 107o
• Type: AB3E
• Ex. : NH3
Trigonal Pyramidal
• PCl3