  In this paper, we use density functional theory to calculate the electronic
structure and properties of 46 metallic and semi-metallic elements. The binding
energy and bond charge model (BBC) model is combined with the tight binding and
density functional tight binding approaches to obtain quantitative information
about atomic bonding at the atomic scale and to understand the contributions
and effects of deformation energy density, energy shifts, and atomic bonding on
the Hamiltonian.
