Information valid for Sb-122 unless otherwise noted
[ATOM]

Antimony

 [ATOM]

Basic Information


Symbol: Sb
Atomic Number: 51
Mass: 121.76
Melting Point: 630
Boiling Point: 1750
Number of Protons/Electrons: 51
Number of Neutrons: 71
Classification: Metalloid
Crystal Structure: Rhombohedral
Density: 6.684
Color: bluish

Atomic Structure

[Bohr Model of Antimony]  
Number of Energy Levels: 5

    First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 18
    Fifth Energy Level: 5

Isotopes

Isotope Half Life
Sb-1172.8 hours
Sb-11938.1 hours
Sb-12015.89 minutes
Sb-121Stable
Sb-1222.7 days
Sb-123Stable
Sb-12460.2 days
Sb-1252.75 years
Sb-12612.4 days
Sb-126m19 minutes
Sb-1273.84 days
Sb-1294.4 hours

Facts


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

Related Links

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