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Hybrid Lobes (spโฟ)
Unhybridized p-orbitals

Concept Quiz

Valence Bond Theory: Hybridization

To explain observed molecular geometries (like the perfect 109.5° angles in Methane), Linus Pauling proposed that atomic orbitals (s, p) mix to form new, identical hybrid orbitals. This mathematical mixing creates orbitals that are strongly directional, allowing for better overlap and stronger sigma ($\sigma$) bonds.

The characteristic shape of a hybrid orbital features a large major lobe (which forms the strong head-on $\sigma$ bond) and a small minor lobe pointing in the opposite direction.