The literature generally describes a metallic bond as the one formed by
means of mutual bonds between atoms' exterior electrons and not
possessing the directional properties. However, attempts have been made
to explain directional metallic bonds, as a specific crystal metallic
This paper demonstrates that the metallic bond in the densest packings
(volume-centered and face-centered) between the centrally elected atom
and its neighbours in general is, probably, effected by 9 (nine)
directional bonds, as opposed to the number of neighbours which equals
12 (twelve) (coordination number).
Probably, 3 (three) "foreign" atoms are present in the coordination
number 12 stereometrically, and not for the reason of bond. This problem
is to be solved experimentally.