Struktur atom dari holmium dan protactinium
Konfigurasi elektron
[Xe] 4f11 6s2
[Rn] 5f2 6d1 7s2
Struktur kristal
Hexagonal Tutup Dikemas (HCP)
Tetragonal (TETR)
kristal Lattice
HCP-Crystal-Structure-of-Holmium.jpg#100
TETR-Crystal-Structure-of-Protactinium.jpg#100
kisi Angles
π/2, π/2, 2 π/3
π/2, π/2, π/2