(32) Unit 7 Part 2

Molecular Geometry

The three-dimensional arrangement of atoms within a molecule.

VSEPR Theory

Valence Shell Electron Pair Repulsion theory, which states that electron pairs around a central atom will arrange themselves to be as far apart from each other as possible.

Lewis Dot Structure

A diagram that represents the valence electrons of atoms within a molecule, which helps in determining molecular geometry.

Tetrahedral Shape

A molecular geometry where one central atom is bonded to four other atoms, with bond angles of 109.5 degrees.

Trigonal Pyramidal

A molecular geometry where one central atom is bonded to three other atoms and has one unshared pair of electrons, resulting in a bond angle of approximately 107 degrees.

Bent Shape

A molecular geometry where the central atom is bonded to two other atoms and has two unshared pairs of electrons, with a bond angle of about 104.5 degrees.

Trigonal Planar

A molecular geometry where one central atom is bonded to three other atoms in a single plane, with bond angles of 120 degrees.

Linear Shape

A molecular geometry where two atoms are bonded to a central atom, with a bond angle of 180 degrees.

Bond Angle

The angle formed between three atoms from the center atom, important for understanding molecular geometry.

Central Atom

The atom in a molecule that is bonded to multiple other atoms; determining its bonds helps predict the shape of the molecule.