On the problem of crystal metallic lattice in the densest packings of chemical elements

Metallic Bond in Densest Packing (Volume-centered and face-centered).This problem is to be solved experimentally.The volume-centered lattice, Z=1 casts no doubt.This is the "coordination number" 9 (nine) for the face-centered and volume-centered lattices.Characteristics of elements.What affects crystals characteristics.Solid state physics.N.W. Ashcroft, N.D. Mermin.The coordination number equals 8.The exterior electrons of the final shell or subcoats in metal atoms form conductivity zone.