Structures

VSEPR Theory
Valence Shell Electron Pair Repulsion Theory
     Pairs of electrons
around the central atom

Name of Structure
                            

Bond Angle
              2
Linear
180 o
              3
 Trigonal Planar
120 o
              4
 Tetrahedral
109.5 o
              5
 Trigonal Bipyramid
120 o & 90o
              6
 Octahedral
90 o
Distorted Structures
1)  Lone pair of electrons
2) Multiple Bonds  
 3) Different Sized Atoms

To view the different structures, click on the link below:
http://www.spusd.k12.ca.us/chemmybear/

Determine the Structure, Bond Angle, and Polarity:
  1)  GaF 3
  2)  SrI 2
  3)  RnCl 2
  4)  SiBr 4
  5)  AsH 5
  6)  TeF 6
  7)  H 2S
  8)  CF3Cl
   9)  PBr3
10)  XeCl 4
11)  CO 2
12)  CCl 2O
Answers:
  1)  Trigonal Planar F-Ga-F = 120 o                                            
 Nonpolar    
  2)  Linear
 I-Sr-I = 180 o  
Nonpolar
  3)  Distorted Trigonal Bipyramid  or  [Linear]
 Cl-Rn-Cl = 180 o
 Nonpolar
  4)  Tetrahedral
 Br-Si-Br = 109.5 o
 Nonpolar
  5)  Trigonal Bipyramid
 H-As-H = 120 o & H-As-H = 90o
 Nonpolar
  6)  Octahedral
 F-Te-F = 90o
 Nonpolar
  7)  Distorted Tetrahedral  or  [Bent]
 H-S-H = Less than 109.5 o
 Polar
  8)  Distorted Tetrahedral
 F-C-F = Less than 109.5o & F-C-Cl = More than 109.5o
 Polar
  9)   Distorted Tetrahedral  or  [Pyramidal]
 Br-P-Br = Less than 109.5o
 Polar
10)  Distrorted Octahedral  or  [Square Planar] Cl-Xe-Cl = 90 o
 Nonpolar
11)  Linear
 O-C-O = 180o
 Nonpolar
12)  Distrorted Trigonal Planar
 Cl-C-Cl = Less than 120o & O-C-Cl = More than 120o
 Polar