Laboratory 8: Lewis Structure Model Part A: PRACTICE EXAMPLES : Count Valence E-
ID: 855800 • Letter: L
Question
Laboratory 8: Lewis Structure Model
Part A: PRACTICE EXAMPLES:
Count Valence E-
Formula
Electron Geometry
And Structure
Molecular Geometry
1 N = 5 3 H = 3
8 / 2 = 4 pair
NH3
H2O
CBr4
SO3 This is not a polyatomic ion
Count Valence E-
Formula
Electron Geometry
And Structure
Molecular Geometry
1 N = 5 3 H = 3
8 / 2 = 4 pair
NH3
H2O
CBr4
SO3 This is not a polyatomic ion
Explanation / Answer
Count of Valance electrons
Formula
Electron pair geometry
Molecular geometry
8
NH3
Tetrahedral
Trigonal pyramidal
8
H2O
Tetrahedral
Bent shape
32
CBr4
Tetrahedral
Tetrahedral
24
SO3
Planar
Planar
26
PI3
Tetrahedral
Pyramidal
14
CH3Cl
Tetrahedral
Tetrahedral
24
NO3-
Planar
Planar
24
CO32-
Planar
Planar
8
NH4+
Tetrahedral
Tetrahedral
8
CH4
Tetrahedral
Tetrahedral
18
SO2
Trigonal planar
Bent
Count of Valance electrons
Formula
Electron pair geometry
Molecular geometry
8
NH3
Tetrahedral
Trigonal pyramidal
8
H2O
Tetrahedral
Bent shape
32
CBr4
Tetrahedral
Tetrahedral
24
SO3
Planar
Planar
26
PI3
Tetrahedral
Pyramidal
14
CH3Cl
Tetrahedral
Tetrahedral
24
NO3-
Planar
Planar
24
CO32-
Planar
Planar
8
NH4+
Tetrahedral
Tetrahedral
8
CH4
Tetrahedral
Tetrahedral
18
SO2
Trigonal planar
Bent
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