◆川. Typical crystal structures of metals 1. BCC O EXample: a-Fe, V, Nb Ta. Cr Mo, W alkali metals 2 n=2 atoms/cell 8CN=8 4 The number of nearest neighbours around each atom is called Coordination Number1. BCC  Example: α-Fe , V, Nb, Ta, Cr, Mo, W, alkali metals  n = 2 atoms/cell  CN=8  The number of nearest neighbours around each atom is called —— Coordination Number. ◆Ⅱ.Typical crystal structures of metals