1. The document discusses different types of atomic bonding: ionic, covalent, metallic, and van der Waals. 2. Ionic bonding involves the electrostatic attraction between oppositely charged ions, where a metal donates electrons to a non-metal. 3. Covalent bonding involves the sharing of valence electrons between two atoms to achieve a stable noble gas configuration. 4. Metallic bonding occurs when valence electrons are delocalized and shared among many atoms in a metal crystal. 5. Van der Waals bonding is a weak electrostatic attraction caused by temporary dipoles that form between molecules.

1. Lecture 4 ETE411 :: Semiconductor

3. Covalent bond

4. Metallic bond

9. Imperfections in Solids

11. Summery of chapter 1