5
B
10.812 u
[He] 2s2 2p1
Boro
metalloidi
14
Si
28.0854 u
[Ne] 3s2 3p2
silicio
metalloidi
32
Ge
72.63 u
[Ar] 3d10 4s2 4p2
germanio
metalloidi
33
As
74.9216 u
[Ar] 3d10 4s2 4p3
arsenico
metalloidi
51
Sb
121.76 u
[Kr] 4d10 5s2 5p3
antimonio
metalloidi
52
Te
127.6 u
[Kr] 4d10 5s2 5p4
tellurio
metalloidi
85
At
210 u
[Xe] 4f14 5d10 6s2 6p5
astato
metalloidi