Chapter 10 Molecular Structure and Bonding Theories. VSEPR. Valence-Shell Electron-Pair Repulsion Model (VSEPR) predicts shape from Lewis Structures. VSEPR Rule 1 : A molecule has a shape that minimizes electrostatic repulsions between valence-shell electron pairs.
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Valence-Shell Electron-Pair Repulsion Model (VSEPR) predicts shape from Lewis Structures.
beryllium has two bonded atoms and no lone pairs, steric number = 2.
shows the boron atom has a steric number = 3; the bonded-atom lone-pair arrangement is trigonal planar.
shows the carbon atom has a steric number = 4; the bonded-atom lone-pair arrangement is tetrahedral.
HCentral Atoms with Lone Pairs