The image you uploaded is an informational worksheet explaining
Molecular Shapes using the
VSEPR model. It does not contain a specific question or problem to solve (like "What is the shape of H2O?"). Instead, it provides the rules and definitions needed to solve such problems.
Since there is no specific question asked in the image, I cannot provide a single "Final Answer" like a number or a specific molecule name. However, I can summarize the key information from the sheet so you can use it to answer any questions your teacher might ask based on this reading.
Here is a summary of the rules provided in the text:
Summary of Molecular Shapes (VSEPR Model)
The main idea is that electron pairs around a central atom want to be as far apart from each other as possible. This creates specific shapes depending on how many groups (atoms or lone pairs) are around the center.
1. Six Groups → Octahedron
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Angles: 90° or 180°
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Positions: All positions are equivalent (the same).
2. Five Groups → Trigonal Bipyramid
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Axial Positions: The two positions pointing up and down. Angle between them is 180°. Angle to equatorial positions is 90°.
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Equatorial Positions: The three positions in the middle triangle. Angles between them are 120°.
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Important Rule: There is more room in the
equatorial positions. Large groups or
lone pair electrons will go here because they need more space.
3. Four Groups → Tetrahedron
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Angles: 109.5°
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Positions: All positions are equivalent.
4. Three Groups → Flat Triangle (Trigonal Planar)
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Angles: 120°
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Positions: All positions are equivalent.
5. Two Groups → Straight Line (Linear)
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Angles: 180° between them.
How Lone Pairs Affect Shape
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Lone pairs take up more space than bonded atoms.
* Because they need more room, lone pairs will always choose the
equatorial positions in a trigonal bipyramid (5 groups) to push other electrons away as much as possible.
* In all shapes, lone pairs try to stay as far apart from other electrons as possible.
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If you have a specific homework question that goes along with this sheet (for example: "What is the shape of a molecule with 4 bonding pairs and 1 lone pair?"), please type that question below, and I will solve it for you using these rules!
Parent Tip: Review the logic above to help your child master the concept of worksheet 15 molecular shapes.
