Molecular Geometry & Shapes

Name the Compound OF2

Oxygen difluoride

Name the Compound PCl5

Phosphorus Pentachloride; Phosphorus(V) chloride

Name the Compound SeF6

Selenium hexafluoride

Name the Compound CBr2O

Carbonyl dibromide

Name the Compound NF3

Nitrogen trifluoride

Molecular Shape - Trigonal Planar

- Trigonal planar is a molecular shape that results when there are three bonds and no lone pairs around the central atom in the molecule. - The pairs are arranged along the central atom's equator, with 120° angles between them. - The carbonate ion (CO32-) has a trigonal planar geometry.

Molecular Shape - Octahedral

- In chemistry, octahedral molecular geometry describes the shape of compounds with six atoms or groups of atoms or ligands symmetrically arranged around a central atom, defining the vertices of an octahedron. - The octahedron has eight faces, hence the prefix octa.

Molecular Shape - Linear

- In chemistry, the linear molecular geometry describes the geometry around a central atom bonded to two other atoms (or ligands) placed at a bond-angle of 180°. - Linear organic molecules, such as acetylene (HC≡CH), are often described by invoking sp orbital hybridization for their carbon centers.

Molecular Shape - Bent

- In chemistry, the term "bent" can be applied to certain molecules to describe their molecular geometry. - Water (H2O) is an example of a bent molecule, as well as its analogues. - The bond angle between the two hydrogen atoms is approximately 104.45°.

Molecular Shape - Really Bent

- In chemistry, the term "really bent" can be applied to certain molecules to describe their molecular geometry. - The bond angle between the two hydrogen atoms is less than 109°.

Molecular Shape - Trigonal Pyramidal

- Trigonal pyramidal is a molecular shape that results when there are three bonds and one lone pair on the central atom in the molecule. - Molecules with an tetrahedral electron pair geometries have sp3 hybridization at the central atom. - Ammonia (NH3) is a trigonal pyramidal molecule.

Molecular Shape - Tetrahedral

- Tetrahedral is a descriptor of the geometry of a molecule in which a central atom forms four bonds which are directed toward the corners of a regular tetrahedron.

Molecular Shape - Trigonal Bi-pyramidal

- Trigonal bipyramidal molecular geometry. - In chemistry a trigonal bipyramid formation is a molecular geometry with one atom at the center and 5 more atoms at the corners of a triangular di-pyramid. - Example of this molecular geometry are phosphorus pentafluoride (PF5)

Linear

AB2 Example: N2O Nitrous oxide

Bent

AB2E Example: O3 - ozone

Really Bent

AB2E2 Example: OF2 - oxygen di-fluoride

Molecular Shape: OF2

AB2E2 bent 109.5 degrees polar molecule

Trigonal Planar

AB3 Example: NO3 - nitrate ion

Trigonal Pyramidal

AB3E Example: PCl3 - phosphorus tri-chloride

Molecular Shape: NF3

AB3E trigonal pyramidal tetrahedral polar

Tetrahedral

AB4 Example: NH4+ - ammonium ion

Trigonal Bipyramidal

AB5 Example: AsF5 - Arsenic pentafluoride

Molecular Shape: PCl5

AB5 trigonal bipyramidal non polar molecule

Octahedral

AB6 Example: SeF6 - Selenium hexafluoride

Molecular Shape: SeF6

AB6 octahedral nonpolar