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Information valid for Sn-119 unless otherwise noted

Basic Information

Symbol: Sn
Atomic Number: 50
Mass: 118.71
Melting Point: 231.9 C
Boiling Point: 2270.0 C
Number of Protons/Electrons: 50
Number of Neutrons: 69
Classification: Other Metals
Crystal Structure: Tetragonal
Density @ 293 K: 7.31 g/cm3
Color: white

Atomic Structure

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

  1. First Energy Level: 2
    Second Energy Level: 8
    Third Energy Level: 18
    Fourth Energy Level: 18
    Fifth Energy Level: 4


Isotope Half Life
Sn-112 Stable
Sn-113 115.1 days
Sn-114 Stable
Sn-115 Stable
Sn-116 Stable
Sn-117 Stable
Sn-117m 13.6 days
Sn-118 Stable
Sn-119 Stable
Sn-119m 293.0 days
Sn-120 Stable
Sn-121 1.12 days
Sn-121m 55.0 years
Sn-122 Stable
Sn-123 129.2 days
Sn-123m 40.1 minutes
Sn-124 Stable
Sn-125 9.63 days
Sn-125m 9.5 minutes
Sn-126 100000.0 years


Date of Discovery: Known to the ancients
Discoverer: Unknown
Name Origin: Latin
Symbol Origin: From the Latin word stannum (tin)
Uses: coating for steel cans
Obtained From: ore cassiterite