<Tr> <Th> Coordination number </Th> <Td> </Td> </Tr> <Tr> <Th> Bond angle (s) </Th> <Td> ≈ 109.5 ° </Td> </Tr> <P> In a tetrahedral molecular geometry, a central atom is located at the center with four substituents that are located at the corners of a tetrahedron . The bond angles are cos (− 1⁄3) = 109.4712206...° ≈ 109.5 ° when all four substituents are the same, as in methane (CH) as well as its heavier analogues . The perfectly symmetrical tetrahedron belongs to point group T, but most tetrahedral molecules have lower symmetry . Tetrahedral molecules can be chiral . </P> <P> Aside from virtually all saturated organic compounds, most compounds of Si, Ge, and Sn are tetrahedral . Often tetrahedral molecules feature multiple bonding to the outer ligands, as in xenon tetroxide (XeO), the perchlorate ion (ClO − 4), the sulfate ion (SO 2 − 4), the phosphate ion (PO 3 − 4). Thiazyl trifluoride (SNF) is tetrahedral, featuring a sulfur - to - nitrogen triple bond . </P>

Where do the tetrahedral bond to each other