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Bold textThe valence bond theory considers the overlap of the atomic orbitals of the participation atoms to form a chemical bond. Due to the overlapping, it is most probable that electrons should be in the bond region.

The overlapping atomic orbitals can be of different types. There are two different types of overlapping orbitals: sigma and pi. Sigma bonds occur when two orbitals overlap (pair of shared electrons) occur on the axis. Pi bonds occur when two orbitals overlap but do not do so on the axes. For example, what is said to be a sigma bond is the frontal overlapping of atomic orbitals.

However, the atomic orbitals for bonding may not be "pure" atomic orbitals directly from the solution of the Schrödinger equation. Often, the bonding atomic orbitals have a character of several possible types of orbitals. The methods to get an atomic orbital with the proper character for the bonding is called hybridisation.

chemical bonds and their affects: chemical bonds as you may know are two forces that attract atoms together so are all chemimcals safe? well not all chemicals are safe, as you know each chemical is different from each other, some may have the same amount of atoms or the same conductivity but when you combine two elements what will the result be? will it be safe for the enviroment, this is very important to know!