Molecular geometry is usually studied using the VSEPR (valence shell electron pair repulsion) model, which predicts the shape of a molecule based on the repulsion between the electrons in the outermost shell of the atoms.Ĭhemists are able to predict the arrangement of atoms and chemical bonds using the valence-shell electron-pair repulsion theory or VSEPR. The geometry of a molecule can have a big impact on its chemical and physical properties, such as its reactivity and solubility.įor example, the shape of a water molecule (H2O) is bent, which gives it a high surface tension and allows it to dissolve many other substances. It is determined by the bonds between the atoms and any lone pairs of electrons that are present in the molecule. Molecular geometry refers to the three-dimensional structure, or arrangement, of the atoms that make up a molecule.
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