Molecular Geometry
Presentation
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Chemistry
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11th - 12th Grade
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Hard
James Gonzalez
FREE Resource
12 Slides • 15 Questions
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Molecular Geometry
VESPR Theory
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Multiple Choice
How are bonded elements shown in a Lewis Structure?
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Multiple Choice
Lone pairs are _______ __________ and are represented by ______ _________.
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The Lewis structure of carbon tetrachloride provides information about connectivities, provides information about valence orbitals, and provides information about bond character.
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Multiple Choice
How many lone pair does each Chlorine atom have around it?
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Tetrahedral
However, the Lewis structure provides no information about the shape of the molecule, which is defined by the bond angles. For carbon tetrachloride, each C-Cl bond angle is 109.5°. Hence, carbon tetrachloride is tetrahedral in structure:
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Multiple Choice
Bond angles between carbon and chlorine in CCl4 are
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Tetrahedral
Therefore, if the central atom has 4 things bonded to it and NO lone pairs (like CH4)(or CCl4) then the shape will be tetrahedral with bond angles of 109.5⁰
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Multiple Choice
Molecules that have 4 elements bonded to the central atom and have NO lone pairs are what shape?
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Linear
If the central atom has two bonded pair (bonded with two other atoms) and no lone pairs that is called linear
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Multiple Choice
A linear molecule has _______ bonded pairs and _______ lone pairs on the central atom.
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Linear
Linear molecules have a bond angle of 180⁰, meaning there is that much space between each set of electrons
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Multiple Choice
The bond angle for a linear molecule is
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Trigonal Planar
Trigonal Planar molecules have three bonded pair and no lone pair on the central atom
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Trigonal Planar
An example of trigonal planar is boron trifluoride, BF3. There are three things bonded to the central atom and the central atom has no lone pairs. The bond angle is 120⁰
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Multiple Choice
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Multiple Select
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Bent
Molecules with two bonding pair and two lone pair are called bent. H2O is the classic example of a bent molecule. There are two hydrogens connected to the central atom, oxygen, and the central atom has 2 lone pair.
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Multiple Choice
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Bent
The bond angle for a bent molecule is 104.5⁰
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Multiple Choice
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Multiple Choice
A bent molecule has _______ lone pair and _______ bonded pair.
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Multiple Choice
What shape is this?
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Multiple Choice
What molecular shape is this?
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Multiple Choice
What molecular shape is this?
Molecular Geometry
VESPR Theory
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