Struktur atom saka americium lan Protaktinium
Konfigurasi elektron
[Rn] 5F 7 7s 2
[Rn] 5F 2 6D 1 7s 2
Struktur Crystal
Double Hexagonal Tutup dikempalken (DHCP)
Tetragonal (TETR)
Crystal pola
DHCP-Crystal-Structure-of-Americium.jpg#100
TETR-Crystal-Structure-of-Protactinium.jpg#100
pola Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2