H2O2 Molecular Geometry Shape and Bond Angles see descp for precise angles

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http://youtube.com/watch?v=XRR1j-qNFD0

A quick explanation of the molecular geometry of H2O2 including a description of the H2O2 bond angles. • Note: There are differences in bond angles in the solid and gas phases for H2O2. The precise bond angles for H2O2 are 101.9 degrees (closer to the predicted value) and in the solid phase and 95.8 degrees in a liquid. See https://en.wikipedia.org/wiki/Hydroge... • There are two central Oxygen (O) atoms in the H2O2 molecule. Since they are symmetrical we will only look at the Oxygen atom on the left since they will both have the same molecular geometry. • Looking at the H2O2 Lewis structure we can see that there are two pairs of unbounded valence electrons on the Oxygen atom on the left. Based on VSEPR Theory (Valence Shell Electron Pair Repulsion Theory) these electrons will repel the electron clouds of the two other atoms and unbounded electron pairs. As a result they will be pushed down giving the H2O2 molecule a bent molecular geometry or shape with respect to the Oxygen atom on the left. The Oxygen atom on the right will have be the same. • The H2O2 bond angle will be about 109 degrees since it has a Bent molecular geometry. • Helpful Resources: • • How to Draw Lewis Structures: • How to Draw Lewis Structures: Five Ea... • • Molecular Geometry and VSEPR Explained: • Molecular Geometry: Rules, Examples, ... • • Using the AXE Method for Molecular Geo: • Molecular Geometry, Bond Angle, Hybri... • • 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).

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