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Homework Help: Few simple questions about atomic structure and properties

  1. Mar 3, 2008 #1
    1. The problem statement, all variables and given/known data
    a)what property of graphite is the result of the presence of delocalized electrons?
    b)what is the reason for the generally low melting point of group I A metals as compared with the high melting points of metals in the center of the transition series?

    3. The attempt at a solution

    a) is it the layers?
    b)i thinks it the higher charge on the transition metals

    thanks in advance
  2. jcsd
  3. Mar 3, 2008 #2
    well, in graphite each carbon atom is bonded to three other carbon atoms forming layers of hexagonal rings. one valence electron is left out, which acts as a charge carrier in the lattice.

    in group 1 there is loosing packing and only 1 electron delocalised per atom. hence weak metallic bond. in transation metals d orbital electrons get delocalised as well, hence a stronger metallic bond.
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