VSEPR Theory establishes that molecular geometry is determined by the minimization of repulsion forces among valence shell electron pairs around a central atom, which drive atoms to maximize their spatial separation. The theory formally categorizes three-dimensional shapes based on two key factors: the count of sigma-bonded groups (ligands) and non-bonding lone pairs surrounding the nucleus, resulting in defined bond angles for linear (180°), trigonal planar (~120°), tetrahedral (~109.5°), trigonal pyramidal (~107°), and bent configurations (<120°). This concept is a fundamental rule within chemical bonding and structural chemistry, providing the theoretical framework for predicting molecular morphology from electron domain counts without relying on specific atomic identities or resonance structures in basic classifications.
VSEPR Theory establishes that molecular geometry is determined by the minimization of repulsion forces among valence shell electron pairs around a central atom, which drive atoms to maximize their sp…