H2CO (Formaldehyde) Molecular Geometry, Bond Angles (and Electron Geometry)
25.4 هزار بار بازدید -
3 سال پیش
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An explanation of the molecular
An explanation of the molecular geometry for the H2CO (Formaldehyde) including a description of the H2CO bond angles. The electron geometry for the Formaldehyde is also provided.
The ideal bond angle for the Formaldehyde is 120° since it has a Trigonal planer molecular geometry. Experimentally we would expect the bond angle to be approximately 120°.
To determine the molecular geometry, or shape for a compound like H2CO, we complete the following steps:
1) Draw the Lewis Structure for the compound.
2) Predict how the atoms and lone pairs will spread out when the repel each other.
3) Use a chart based on steric number (like the one in the video) or use the AXN notation to find the molecular shape. This will be determined by the number of atoms and lone pairs attached to the central atom.
If you are trying to find the electron geometry for H2CO we would expect it to be Trigonal planer.
Helpful Resources:
• How to Draw Lewis Structures: How to Draw Lewis Structures: Five Ea...
• Molecular Geometry and VSEPR Explained: Molecular Geometry: Rules, Examples, ...
• Molecular Geo App: https://phet.colorado.edu/sims/html/m...
Get more chemistry help at http://www.breslyn.org
Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).
The ideal bond angle for the Formaldehyde is 120° since it has a Trigonal planer molecular geometry. Experimentally we would expect the bond angle to be approximately 120°.
To determine the molecular geometry, or shape for a compound like H2CO, we complete the following steps:
1) Draw the Lewis Structure for the compound.
2) Predict how the atoms and lone pairs will spread out when the repel each other.
3) Use a chart based on steric number (like the one in the video) or use the AXN notation to find the molecular shape. This will be determined by the number of atoms and lone pairs attached to the central atom.
If you are trying to find the electron geometry for H2CO we would expect it to be Trigonal planer.
Helpful Resources:
• How to Draw Lewis Structures: How to Draw Lewis Structures: Five Ea...
• Molecular Geometry and VSEPR Explained: Molecular Geometry: Rules, Examples, ...
• Molecular Geo App: https://phet.colorado.edu/sims/html/m...
Get more chemistry help at http://www.breslyn.org
Drawing/writing done in InkScape. Screen capture done with Camtasia Studio 4.0. Done on a Dell Dimension laptop computer with a Wacom digital tablet (Bamboo).
3 سال پیش
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