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- hybrid orbital
- An orbitalA mathematically defined region of electron density around one or more atoms; a wave function that defines the properties of a particular electron in an atom or molecule. formed by mathematically combining atomic orbitals (all on the same atomThe smallest particle of an element that can be involved in chemical combination with another element; an atom consists of protons and neutrons in a tiny, very dense nucleus, surrounded by electrons, which occupy most of its volume.) to generate an equivalent set of orbitals more consistent with the observed bonding geometry.