Indium (In)

General Properties

Symbol In
Atomic Number 49
Atomic Weight 114.818
Group
13 (boron family)
IIIB (IUPAC), IIIA (CAS)
Solid, Diamagnetic, Conductor, Metal, Stable, Natural, Poor Metal
Period 5
Block p

Physical Properties

Density 7.31 g/cm3
Atomic Volume 15.7 cm3/mole
Atomic Radius 1.66 angstroms
Covalent Radius 144 pm
Crust Abundance 0.000016%
Crystal Structure Tetragonal
Color Silver

Energy

Electronegativity 1.8 (Pauling Scale)
Electron Affinity 28.9 kJ/mol
1st Ionization Energy 558 kJ/mol
2nd Ionization Energy 1820.7 kJ/mol
3rd Ionization Energy 2704 kJ/mol
4th Ionization Energy 5210 kJ/mol
Specific Heat Capacity 0.233 J g−1 K−1
Thermal Conductivity 81.6 W·m−1·K−1

Electrons & Oxidation

Oxidation States 3
Electrons Per Shell 2 8 18 18 3
Electron Configuration [Kr] 4d10 5s2 5p1
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p1
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4s
↿⇂
4p
↿⇂
↿⇂
↿⇂
4d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4f
 
 
 
 
 
 
 
5s
↿⇂
5p
↿ 
 
 
5d
 
 
 
 
 
5f
 
 
 
 
 
 
 

Nuclear

Radioactive No

Media

Planetary Bohr Model of Indium (In)
Lewis Dot Diagram of Indium (In)
Description
Rare, very soft, silver-white metal
Uses
Used to coat high speed bearings and as an alloy that lowers the melting point of other metals. Relativly small amounts are used in dental items and in electronic semiconductors.
Sources
Found in certain zinc ores.
Pronounciation (English)
IN-di-em

Translations

Afrikaans Indium
Aragonese Indio
العربية انديوم
Armãneashte Indiumu
asturianu Indiu
azərbaycan dili İndium
български Индий
বাংলা ইন্ডিয়াম
brezhoneg Indiom
bosanski Indij[um]
Byelorussian Iндый
Cebuano Indyo
čeština Indium
Chuvash Инди
Cymraeg Indi
dansk Indium
Deutsch Indium
Ελληνικά Ινδιο
English Indium
esperanto Indio
español Indio
eesti Indium
euskara Indioa
فارسی ایندیم
suomi Indium
føroyskt Indium
français Indium
furlan Indi
West-Frysk Indium
Gaeilge Indiam
Gàidhlig Indiam
galego Indio
ગુજરાતી ઇન્ડિયમનો
Gaelg Indjum
Hakka Chinese Yîn (銦)
עברית אינדיום
हिन्दी इण्डियम
hrvatski Indij
magyar Indium
հայերեն Ինդիում
Indonesia Indium
íslenska Indín
italiano Indio
日本語 インジウム
ქართული ინდიუმი
کٲشُر Jind
қазақ тілі Индий
한국어 인듐
Kurdish Îndiyûm
Komi Индий
kernewek Eyndyum
кыргызча Индий
Latin Indium
Lëtzebuergesch Indium
Lombard Índi
lingála Indu
lietuvių Indis
latviešu Indijs
Mari Индий
Maori Indium
македонски Индиум
മലയാളം ഇന്‍ഡിയം
монгол Инди
Мокшан Инди
Bahasa Melayu Indium
Malti Indju[m]
Nahuatl Indio
Nederlands Indium
norsk Indium
Occitan Indi
ирон Индий
polski Ind
português Índio
Runasimi Indyu
română Indiu
русский Индий
slovenčina Indium
slovenščina Indij
Samoan Indimi
Samogitian Ėndis
shqip Indium
српски Индијум
Southern Sotho Indiamo
svenska Indium
Kiswahili Indi
தமிழ் இந்தியம்
Tajik Индий
ไทย อินเดียม
Türkçe İndiyum
ئۇيغۇرچە ئىندىي
українська Iндій
o‘zbek Indiy
Tiếng Việt Indi
Võro Indium
中文

History

Discovered In
1863
Discovered By
Ferdinand Reich, Hieronymus Theodor Richter
Discovered At
Germany
Word Origin
Named after the indigo line in its atomic spectrum