The simplest type of orbital – the s-orbital – is spherical and can be occupied by a maximum of two electrons. p- and d-orbitals are more complex in shape. There are three p-orbitals in each energy level (above the first) set at right-anges to each other (labeled 1, 2, 3, in the diagram above). d-orbitals come in sets of five (C through G in the diagram).
In molecules, the bonding electrons move in the combined electric field of all the nuclei. The atomic orbitals then become molecular orbitals – regions encompassing two nuclei, having a characteristic energy and containing two electrons. These molecular orbitals, which can be thought of as formed by the overlap of atomic orbitals, constitute chemical bonds.
Related categories• ATOMIC AND NUCLEAR PHYSICS
• CHEMICAL BONDING
• PARTICLE PHYSICS
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