1. Survey of the Elements: 1. Element structures 2. Oxide structures 3
Survey of the Elements: 1. Element structures 2. Oxide structures 3. Cool things about some elements

2. Structures of the Elements

3. Metals: Close packing

5. Number of Bonds Possible:

11. Allotropes of Boron: linked B12 icosahedra
β-R boron
 α-R boron
 γ-boron

12. Traditional Allotropes of Carbon

14. New Allotropes of Carbon: Fullerenes

15. New Allotropes of Carbon: Nanotubes

16. New Allotropes of Carbon: Graphene

17. Industrial Production of Diamonds

19. Why is diamond formed, and not graphite?
H2(g)  2 H(g)
H(g) + CH4(g)  CH3(g) + H2(g)
CH3 + C(diamond-H, surface)  Diamond-CH3 + H
Why is diamond formed, and not graphite?
Reason 1. Reverse Reaction favors Graphite Instability
H + diamond  CH4, but slower than CVD diamond growth
H + graphite  CH4, but faster than CVD graphite growth
Reason 2. Forward Reaction favors Diamond Formation
sp3 C atoms on surface (show structures) slow sp2 graphite formation.