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Questions and Answers
Match the following molecular geometries with their corresponding electron pair arrangements and approximate bond angles:
Match the following molecular geometries with their corresponding electron pair arrangements and approximate bond angles:
Bent = 2, 2, , <109.5° (<105°) Tetrahedral = 4, 0, 109.5° See-Saw = 5, 1, 90°, <120° Square Planar = 6, 2, 90° Square Pyramidal = 6, 1, 90°, <90° Trigonal Bipyramidal = 5, 0, 90°, 120° Linear = 2, 0, 180°
What is the electron pair arrangement and approximate bond angles for a molecule with 4 electron groups and 2 lone pairs?
What is the electron pair arrangement and approximate bond angles for a molecule with 4 electron groups and 2 lone pairs?
A molecule with 5 electron groups with 1 lone pair has what electron pair arrangement and molecular geometry?
A molecule with 5 electron groups with 1 lone pair has what electron pair arrangement and molecular geometry?
What is the bond angle of a molecule with a linear electron pair arrangement?
What is the bond angle of a molecule with a linear electron pair arrangement?
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A molecule with 6 electron groups and 0 lone pairs has an octahedral molecular geometry.
A molecule with 6 electron groups and 0 lone pairs has an octahedral molecular geometry.
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What is the electron pair arrangement for a molecule with 4 electron groups and 1 lone pair?
What is the electron pair arrangement for a molecule with 4 electron groups and 1 lone pair?
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A molecule with 5 electron groups and 2 lone pairs has a T-shaped molecular geometry.
A molecule with 5 electron groups and 2 lone pairs has a T-shaped molecular geometry.
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Study Notes
Molecular Geometry
- Electron pairs and lone pairs affect molecular shape.
- Electron pair arrangement and molecular geometry are not always the same
- Different numbers of lone pairs and electron groups result in different molecular shapes.
- Bond angles are affected by repulsion between electron pairs.
Specific Geometries and Bond Angles
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2 Electron Groups:
- Linear arrangement: 180° bond angle
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3 Electron Groups:
- Trigonal planar arrangement: 120° bond angle
- Bent arrangement: <120° bond angle
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4 Electron Groups:
- Tetrahedral arrangement: 109.5° bond angle
- Trigonal pyramidal arrangement: <109.5° (~107°) bond angle
- Bent arrangement: <109.5° (~105°) bond angle
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5 Electron Groups:
- Trigonal bipyramidal arrangement: 90°, 120° bond angles
- See-saw arrangement: <90°, <120° bond angles
- T-shaped arrangement: <90° bond angle
- Linear arrangement: 180° bond angle
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6 Electron Groups:
- Octahedral arrangement: 90°, 90° bond angles
- Square pyramidal arrangement: 90°, <90° bond angles
- Square planar arrangement: 90° bond angle
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Description
Test your knowledge on molecular geometry, including how electron pairs and lone pairs influence molecular shape. This quiz covers various electron group arrangements, geometries, and their corresponding bond angles. Enhance your understanding of the relationships between electron pair arrangements and molecular shapes.
