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67Ho

Holmium

홀뮴 · ホルミウム

Lanthanide

Atomic number67
ElementHoHolmium
Atomic mass164.93
CategoryLanthanide
Group3
Period6
Electron config[Xe] 4f11 6s2
Shells2,8,18,29,8,2
State (RT)Solid
Melting pt1474°C
Boiling pt2700°C
Electronegativity1.23
Discovered1878
Main usesHigh-power magnets, lasers
Ho67
2 · 8 · 18 · 29 · 8 · 2
Bohr model

Group 3