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

Survey of the Elements : 1. Element structures 2. Oxide structures 3. Cool things about some elements. Structures of the Elements. Metals: Close packing. Number of Bonds Possible:. Allotropes of Boron: linked B 12 icosahedra. β- R boron.  α- R boron.  γ- boron.

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

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  1. Survey of the Elements:1. Element structures2. Oxide structures3. Cool things about some elements

  2. Structures of the Elements

  3. Metals: Close packing

  4. Number of Bonds Possible:

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

  6. Traditional Allotropes of Carbon

  7. New Allotropes of Carbon: Fullerenes C60

  8. New Allotropes of Carbon: Nanotubes

  9. New Allotropes of Carbon: Graphene

  10. Industrial Production of Diamonds

  11. 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.

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