51Sb
Antimony
안티모니 · アンチモン
Metalloid
Atomic number51
ElementSb — Antimony
Atomic mass121.76
CategoryMetalloid
Group15
Period5
Electron config[Kr] 4d10 5s2 5p3
Shells2,8,18,18,5
State (RT)Solid
Melting pt631°C
Boiling pt1587°C
Electronegativity2.05
DiscoveredAncient
Main usesFlame retardants, alloys
2 · 8 · 18 · 18 · 5