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  2. Sulfur trioxide - Wikipedia

    en.wikipedia.org/wiki/Sulfur_trioxide

    Sulfur trioxide (alternative spelling sulphur trioxide) is the chemical compound with the formula SO 3. It has been described as "unquestionably the most [economically] important sulfur oxide". [ 1 ] It is prepared on an industrial scale as a precursor to sulfuric acid .

  3. Trigonal pyramidal molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Trigonal_pyramidal...

    In chemistry, a trigonal pyramid is a molecular geometry with one atom at the apex and three atoms at the corners of a trigonal base, resembling a tetrahedron (not to be confused with the tetrahedral geometry). When all three atoms at the corners are identical, the molecule belongs to point group C 3v.

  4. SO3 - Wikipedia

    en.wikipedia.org/wiki/SO3

    SO3 may refer to Sulfur trioxide, SO 3, a chemical compound of sulfur and the anhydride of sulfuric acid; Sulfite, SO 2− 3, a chemical ion composed of sulfur and oxygen with a 2− charge; SO(3), the special orthogonal group in 3 dimensions; the rotations that can be given an object in 3-space

  5. Trigonal planar molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Trigonal_planar_molecular...

    In organic chemistry, planar, three-connected carbon centers that are trigonal planar are often described as having sp 2 hybridization. [2] [3] Nitrogen inversion is the distortion of pyramidal amines through a transition state that is trigonal planar. Pyramidalization is a distortion of this molecular shape towards a tetrahedral molecular ...

  6. VSEPR theory - Wikipedia

    en.wikipedia.org/wiki/VSEPR_theory

    The lone pairs on transition metal atoms are usually stereochemically inactive, meaning that their presence does not change the molecular geometry. For example, the hexaaquo complexes M(H 2 O) 6 are all octahedral for M = V 3+, Mn 3+, Co 3+, Ni 2+ and Zn 2+, despite the fact that the electronic configurations of the central metal ion are d 2, d ...

  7. Square pyramidal molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Square_pyramidal_molecular...

    Structure of xenon oxytetrafluoride, an example of a molecule with the square pyramidal coordination geometry. Square pyramidal geometry describes the shape of certain chemical compounds with the formula ML 5 where L is a ligand. If the ligand atoms were connected, the resulting shape would be that of a pyramid with a square base.

  8. Structural formula - Wikipedia

    en.wikipedia.org/wiki/Structural_formula

    Unlike other chemical formula types, [a] which have a limited number of symbols and are capable of only limited descriptive power, structural formulas provide a more complete geometric representation of the molecular structure. For example, many chemical compounds exist in different isomeric forms, which have different enantiomeric structures ...

  9. Seesaw molecular geometry - Wikipedia

    en.wikipedia.org/wiki/Seesaw_molecular_geometry

    The seesaw geometry occurs when a molecule has a steric number of 5, with the central atom being bonded to 4 other atoms and 1 lone pair (AX 4 E 1 in AXE notation). An atom bonded to 5 other atoms (and no lone pairs) forms a trigonal bipyramid with two axial and three equatorial positions, but in the seesaw geometry one of the atoms is replaced ...