![[ATOM]](atom.gif) |
Indium
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Information valid for In-115 unless otherwise noted
Basic Information
Symbol: In
Atomic Number: 49
Mass: 114.818
Melting Point: 156.61 C
Boiling Point: 2000.0 C
Number of Protons/Electrons: 49
Number of Neutrons: 66
Classification: Other Metals
Crystal Structure: Tetragonal
Density @ 293 K: 7.31 g/cm3
Color: Silverish
Atomic Structure
![[Bohr Model of Indium]](b0049.gif) |
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Number of Energy Levels: 5
First Energy Level: 2
Second Energy Level: 8
Third Energy Level: 18
Fourth Energy Level: 18
Fifth Energy Level: 3
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Isotopes
| Isotope |
Half Life |
| In-111 |
2.8 days |
| In-113 |
Stable |
| In-113m |
1.7 hours |
| In-114 |
1.2 minutes |
| In-114m |
49.5 days |
| In-115 |
4.4E14 years |
| In-115m |
4.5 hours |
| In-116 |
14.1 seconds |
| In-116m |
54.2 minutes |
| In-117 |
44.0 minutes |
| In-117m |
1.9 hours |
Facts
Date of Discovery: 1863
Discoverer: Ferdinand Reich
Name Origin: From the Indigo color seen in its spectrum
Uses: coating of high-speed bearings
Obtained From: by-product of zinc refining