Crystal Lattice

 The majority of common metals have either a Face Centre Cubic Structure(FCC), Body Centered Cubic Structure(BCC), or an Hexagonal Close Packed structure(HCP).

First Few Coordinations (Neighbours) of Few General Lattices:

LATTICE     1ST       2ND         3RD       4TH
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BCC             8           6             12          24
FCC           12           6             24          12