![]() Number of electrons donated by hydrogen atoms = 2 x (H) Examples of Molecular Geometry Molecular Geometry of H 2O The geometry there is “bent or angular” because the lone electron pair needs more space than two bonding electron pair. For example, if a certain molecule is composed of two pairs of bonding electrons along with a lone pair, the molecular geometry is not linear. The geometries are determined based on the fact that lone electron pairs need more space than bonding electron pairs. Moreover, double bonds and triple bonds are considered as single bonds. In this case, lone electron pairs are not taken into account. Molecular geometry is the shape of a molecule predicted by considering only bond electron pairs. Therefore, the electron geometry = tetrahedral Number of lone electron pairs = 4 – 4 = 0 Total number of electrons around C = 4 + 4 = 8 ![]() Number of electrons donated by hydrogen atoms = 4 x (H) This gives the number of lone electron pairs present in the molecule.
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