Energy, compressibility and covalency in the carbon subgroup Journal Article uri icon

DCO ID 11121/1506-9781-4910-3974-CC

in language

  • eng

year of publication

  • 2000


  • It is shown that a scaling relation of the type K0V0/E-0 approximate to constant, where K-0, V-0 and E-0 are the bulk modulus, volume and total energy respectively at normal pressure, holds for the C subgroup of the Mendeleev periodic table of elements, which consists of C itself, Si, Ge, Sn and Pb. This means that so-called covalency does not contribute significantly to the compressibility of the corresponding substances. The extreme high value of the bulk modulus of diamond is clearly the result of its highest known atomic density.


  • 80


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