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TABLE 9.2 Electron-Domain and Molecular Geometries of Molecules with Lone Pairs on the Central Atom Total Number of Electron Domains Type of Molecule Electron-Domain Geometry Number of Lone Pairs Placement of Lone Pairs Molecular Geometry Example 3 AB$_2$ Trigonal planar 1 Bent SO$_2$ 4 AB$_3$ Tetrahedral 1 Trigonal NH$_3$ pyramidal 4 AB$_2$ Tetrahedral 2 Bent H$_2$O 5 AB$_4$ Trigonal bipyramidal 1 Seesaw-shaped SF$_4$ 5 AB$_3$ Trigonal bipyramidal 2 T-shaped ClF$_3$ 5 AB$_2$ Trigonal bipyramidal 3 Linear IF$_2$ 6 AB$_5$ Octahedral 1 Square BrF$_5$ pyramidal 6 AB$_4$ Octahedral 2 Square planar XeF$_4$

          TABLE 9.2
Electron-Domain and Molecular Geometries of Molecules with Lone Pairs on the Central Atom
Total Number of
Electron Domains
Type of
Molecule
Electron-Domain
Geometry
Number of
Lone Pairs
Placement of
Lone Pairs
Molecular
Geometry
Example
3
AB$_2$
Trigonal planar
1
Bent
SO$_2$
4
AB$_3$
Tetrahedral
1
Trigonal
NH$_3$
pyramidal
4
AB$_2$
Tetrahedral
2
Bent
H$_2$O
5
AB$_4$
Trigonal bipyramidal
1
Seesaw-shaped
SF$_4$
5
AB$_3$
Trigonal bipyramidal
2
T-shaped
ClF$_3$
5
AB$_2$
Trigonal bipyramidal
3
Linear
IF$_2$
6
AB$_5$
Octahedral
1
Square
BrF$_5$
pyramidal
6
AB$_4$
Octahedral
2
Square planar
XeF$_4$

Show more…

TABLE 9.2
Electron-Domain and Molecular Geometries of Molecules with Lone Pairs on the Central Atom
Total Number of
Electron Domains
Type of
Molecule
Electron-Domain
Geometry
Number of
Lone Pairs
Placement of
Lone Pairs
Molecular
Geometry
Example
3
AB2
Trigonal planar
1
Bent
SO2
4
AB3
Tetrahedral
1
Trigonal
NH3
pyramidal
4
AB2
Tetrahedral
2
Bent
H2O
5
AB4
Trigonal bipyramidal
1
Seesaw-shaped
SF4
5
AB3
Trigonal bipyramidal
2
T-shaped
ClF3
5
AB2
Trigonal bipyramidal
3
Linear
IF2
6
AB5
Octahedral
1
Square
BrF5
pyramidal
6
AB4
Octahedral
2
Square planar
XeF4

Added by Yvette M.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Nicole Smina

05/24/2023

Step 1

- For AB2 molecules, there are 3 electron domains. - For AB3 molecules, there are 4 electron domains. - For AB4 molecules, there are 5 electron domains. - For AB5 molecules, there are 6 electron domains. Show more…

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Balloon Geometery Lab For today’s experiment, you will be designing and explaining all of the different electron domain geometries (Table 9.2) using balloons (similar to that of figure 9.1). For each of these please indicate the total number of electron domains, the type of molecule, the electron domain geometry, number of lone pairs and give an example of each. TABLE 9.2 Electron-Domain and Molecular Geometries of Molecules with Lone Pairs on the Central Atom Total Number of Type of Molecule Electron-Domain Number of Placement of Molecular Geometry Electron Domains Geometry Lone Pairs Lone Pairs Example 3 AB2 1 SOr Trigonal planar Bent 4 AB3 1 Trigonal pyramidal NH3 Tetrahedral 4 AB2 2 HO Tetrahedral Bent 5 AB4 1 SF4 Trigonal bipyramidal Seesaw-shaped 5 AB3 2 ClF3 Trigonal bipyramidal T-shaped 5 AB2 3 IF2 Trigonal bipyramidal Linear 6 ABs 1 Square pyramidal BrF5 Octahedral 6 AB4 2 XeF4 Octahedral Square planar

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