The structure of the atom.
Understanding the variations in the structure and composition of individual molecules with the same chemical formula.
The structure of aromatic hydrocarbons.
Understanding the electronic structure of an atom.
The properties and structure of ionic bonds
The properties and structure of metallic bonds.
The properties and structure of covalent bonds.
The properties and structure of hydrates.
The properties and electronic structure of the s-block elements.
How to draw the structure of a molecule using VSEPR rules.
How to express the electronic structure of atoms using electron configuration notation.
The description and importance of proteins.