Indium

Statistics:

• Name: Indium
• Symbol: In
• Classification: Poor Metals
• Atomic Number: 49
• Atomic Mass: 114.818 g/mol
• Density: 7.31 g/cm³
• Melting: 156.2°C
• Boiling: 2080°C
• Protons & Electrons:49
• Neutrons:66
• Discovered: 1863
• Discovered By: Reich and Richter
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Electrons Per Energy Level:

• Level 1: 2
• Level 2: 8
• Level 3: 18
• Level 4: 18
• Level 5: 3

Isotopes:

Isotope: Half-life

• ¹¹¹In: 2.8047 days
• ¹¹³In: stable
• ^113m1In: 1.6582 hours
• ¹¹⁴In: 71.9 seconds
• ^114m1In: 49.51 days
• ¹¹⁵In: 4.41e+14 years
• ^115m1In: 4.486 hours
• ¹¹⁶In: 14.10 seconds
• ^116m1In: 54.29 minutes
• ¹¹⁷In: 43.2 minutes
• ^117m1In: 116.2 minutes

Brief Summary

Indium is a Poor Metals with the symbol 'In' and contains 49 Protons & Electrons with 66 neutrons in the nucleus of the atom. Indium has an atomic mass of 114.818 g/mol and, at a temperature of 20°C, has a density of 7.31 g/cm³. It will melt at a temperature of 156.2°C and boil at 2080°C.

Indium was discovered by Reich and Richter in 1863 and is named 'Indium' From the indigo color seen in the light spectrum it creates.

Some common usages for Indium: coating of high-speed bearings.

Definitions and Notes

Density listed is at a temperature of 20°C.

Isotopes are forms of an element who have the same atomic number but different mass because they contain different number of neutrons.

Half-life is the time required for a quantity of a subject to fall to half of its current quantity.

MLA Citing Format

Indium :: In :: 49 - Chemical Element. 22 Nov. 2008 <http://www.chemicalelement.com/element/indium.html>.