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# Molecular Geometries and Bond Angles This table displays examples of different molecular geometries based on the AXn notation. The AXn notation describes the central atom (A) and the surrounding atoms (X) and the number of atoms (n). | AXn | Molecular Geometry | Bond angle (α) | Description/Oth...

# Molecular Geometries and Bond Angles This table displays examples of different molecular geometries based on the AXn notation. The AXn notation describes the central atom (A) and the surrounding atoms (X) and the number of atoms (n). | AXn | Molecular Geometry | Bond angle (α) | Description/Other Bond Angle | |---|---|---|---| | AX2 | Linear | 180° | | | AX3 | Trigonal planar | 120° | | | AX4 | Tetrahedral | 109.47° | | | AX5 | Trigonal bipyramidal | α = 120° and β = 90° | | | AX6 | Octahedral | 90° | | **Figures:** The table also includes diagrams illustrating the 3D shapes of each molecule. These molecular shapes are determined by the repulsion between electron pairs in the valence shell of the central atom, minimizing the repulsion. **Important Note:** The term "Figure de répulsion" in the table header translates to "repulsion figure." In the context of chemistry, this often correlates directly to molecular geometry. The table distinguishes between the effects of electron repulsion and the resulting geometric arrangement of atoms, though they are intimately related.