Tetrahedral coordination is a type of molecular geometry where a central atom is surrounded by four other atoms or groups, forming a shape resembling a tetrahedron. This arrangement occurs when the central atom has four bonding pairs of electrons, which repel each other and position themselves as far apart as possible. Common examples include compounds like methane (CH₄) and silicon compounds. In tetrahedral coordination, the bond angles between the surrounding atoms are approximately 109.5 degrees. This geometry is significant in chemistry as it influences the properties and reactivity of molecules. It is commonly observed in carbon compounds and various metal complexes.