Lewis Structures

• Elements bond with valence electrons, electrons on the outside highest energy level

• Octet Rule: Most atoms want to have 8 electrons, but is often broken by small atoms and atoms that can make expanded octet

• Single Lewis Structures:

• Hydrogen always goes on outside of the molecule

• Least electronegative atoms go to the center

  • Symmetry is good because tends to be more stable

Covalent Lewis structures with single bonds

• “Chunked” Formula

• Lewis Structures w/ Double or Triple bonds