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A general (not necessarily regular) tetrahedron, defined as a convex polyhedron consisting of four (not necessarily identical) triangular faces can be specified by its polyhedron vertices as , where , ..., 4. Then the volume of the tetrahedron is given by.
From Wikipedia, the free encyclopedia. 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 â1 (â1/3) =109.4712206...Â°â 109.5Â° when all four substituents are the same, as in methane (CH 4).ften tetrahedral molecules feature multiple bonding to the outer ligands, as in xenon tetroxide (XeO 4), the perchlorate ion (ClO 4 â), the sulfate ion (SO 4 2â), the phosphate ion (PO 4 3â). Thiazyl trifluoride (SNF 3) is tetrahedral, featuring a sulfur-to-nitrogen triple bond.