Dot structures

9 videos
5B: We can’t always see molecules, but we can always simplify and draw depictions of them with simply pen and paper. It is the language of chemistry that we want you to get acquainted with. You will learn to draw Lewis dot structures and resonance structures, assign formal charges, and analyze the geometry of molecules and ions.

Drawing dot structures

VIDEO 14:42 minutes
Guidelines for drawing Lewis dot structures.

Formal charge and dot structures

VIDEO 11:30 minutes
Definition of formal charge, and how minimization of formal charge can help choose the more stable dot structure.

Resonance and dot structures

VIDEO 6:15 minutes
Drawing resonance structures and resonance hybrid using example of nitrate anion.

VSEPR for 2 electron clouds

VIDEO 8:04 minutes
Definition of VSEPR and examples of molecules with two electron clouds.

VSEPR for 3 electron clouds

VIDEO 12:33 minutes
VSEPR for three electron clouds including examples for trigonal planar and bent molecules.

VSEPR for 4 electron clouds

VIDEO 10:05 minutes
VSEPR for molecules with four electron clouds including examples for tetrahedral, trigonal pyramidal, and bent molecules.

VSEPR for 5 electron clouds

VIDEO 14:58 minutes
VSEPR for molecules with five electron clouds including examples for trigonal bipyramidal and seesaw-shaped molecules.

VSEPR for 5 electron clouds (continued)

VIDEO 10:48 minutes
Part II of using VSEPR for five electron clouds including examples for T-shaped and linear molecules.

VSEPR for 6 electron clouds

VIDEO 12:29 minutes
VSEPR for six electron clouds including examples for octahedral, square pyramidal, and planar molecules.