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Antimony |
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Symbol: Sb
Atomic Number: 51
Mass: 121.76
Melting Point: 630.0 C
Boiling Point: 1750.0 C
Number of Protons/Electrons: 51
Number of Neutrons: 71
Classification: Metalloid
Crystal Structure: Rhombohedral
Density @ 293 K: 6.684 g/cm3
Color: bluish
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Number of Energy Levels: 5
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Isotope | Half Life |
Sb-117 | 2.8 hours |
Sb-119 | 38.1 hours |
Sb-120 | 15.89 minutes |
Sb-121 | Stable |
Sb-122 | 2.7 days |
Sb-123 | Stable |
Sb-124 | 60.2 days |
Sb-125 | 2.75 years |
Sb-126 | 12.4 days |
Sb-126m | 19.0 minutes |
Sb-127 | 3.84 days |
Sb-129 | 4.4 hours |
Date of Discovery: Known to the ancients
Discoverer: Unknown
Name Origin: From the Greek words anti (opposed) and monos
(solitude)
Symbol Origin: Greek
Uses: hardens lead, plastics, chemicals
Obtained From: stibnite, valentinite