Struktur atom saka Actinium lan berkelium
Konfigurasi elektron
[Rn] 6D 1 7s 2
[Rn] 5F 9 7s 2
Struktur Crystal
Face tengah kubik (FCC)
Double Hexagonal Tutup dikempalken (DHCP)
Crystal pola
FCC-Crystal-Structure-of-Actinium.jpg#100
DHCP-Crystal-Structure-of-Berkelium.jpg#100
pola Angles
π/2, π/2, π/2
π/2, π/2, 2 π/3