As we discussed in class, go to this site for an overview of bonding, including metallic bonding. We’re reminded that metals exist in a regular crystalline lattice, hence are shiny, densely packed with up to 12 nearest neighbours or touching atoms.
The image is a transmission electron microscope picture of a metallic structure, at almost the molecular level. It shows how disjointed the structure is in real life. There are probably over a billion atoms in the picture