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Explore molecule shapes by building molecules in 3D! How does molecule shape change with different numbers of bonds and electron pairs? Find out by adding single, double or triple bonds and lone pairs to the central atom. Then, compare the model to real molecules!
- Polarity
When is a molecule polar? Change the electronegativity of...
- Build a Molecule
An interactive simulation by PhET that allows users to build...
- Polarity
An interactive simulation by PhET that allows users to build molecules and understand their structures.
Molecule Shapes - PhET Interactive Simulations
Predict the electron-pair geometry and molecular structure of a water molecule. Solution. The Lewis structure of H 2 O indicates that there are four regions of high electron density around the oxygen atom: two lone pairs and two chemical bonds:
Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular geometry, including approximate bond angles around a central atom, of a molecule from an examination of the number of bonds and lone electron pairs in its Lewis structure.
H2O Water. Water has 4 regions of electron density around the central oxygen atom (2 bonds and 2 lone pairs). These are arranged in a tetrahedral shape. The resulting molecular shape is bent with an H-O-H angle of 104.5°.
13 Νοε 2022 · Explain the distinction between coordination geometry and molecular geometry, and provide an illustration based on the structure of water or ammonia. Draw a diagram of a tetrahedral or octahedral molecule.
