Terbium (Tb)

General Properties

Symbol Tb
Atomic Number 65
Atomic Weight 158.92535
Group
(Lanthanoids)
Solid, Paramagnetic, Conductor, Lanthanide, Stable, Natural
Period 6
Block f

Physical Properties

Density 8.23 g/cm3
Atomic Volume 19.2 cm3/mole
Atomic Radius 1.8 angstroms
Covalent Radius --
Crust Abundance 0.000093%
Crystal Structure Hexagonal
Color Silver

Energy

Electronegativity (Pauling Scale)
Electron Affinity 50 kJ/mol
1st Ionization Energy 566 kJ/mol
2e Ionization Energy 1110 kJ/mol
3e Ionization Energy 2114 kJ/mol
4e Ionization Energy 3839 kJ/mol
Specific Heat Capacity 0.18 J g−1 K−1
Thermal Conductivity 11.1 W·m−1·K−1

Electrons & Oxidation

Oxidation States +3,4
Electrons Per Shell 2 8 18 27 8 2
Electron Configuration [Xe] 4f9 6s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f9 6s2
Orbital Diagram
1s
↿⇂
2s
↿⇂
2p
↿⇂
↿⇂
↿⇂
3s
↿⇂
3p
↿⇂
↿⇂
↿⇂
3d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4s
↿⇂
4p
↿⇂
↿⇂
↿⇂
4d
↿⇂
↿⇂
↿⇂
↿⇂
↿⇂
4f
↿⇂
↿⇂
↿ 
↿ 
↿ 
↿ 
↿ 
5s
↿⇂
5p
↿⇂
↿⇂
↿⇂
5d
 
 
 
 
 
5f
 
 
 
 
 
 
 
6s
↿⇂
6p
 
 
 
6d
 
 
 
 
 
6f
 
 
 
 
 
 
 

Nuclear

Radioactive No

Media

Planetary Bohr Model of Terbium (Tb)
Lewis Dot Diagram of Terbium (Tb)
Description
Soft, ductile, silvery-gray, rare earth metal.
Uses
It is used in modest amounts in special lasers and solid-state devices.
Sources
Found with other rare earths in monazite sand, which typically contain 0.03% terbium. Other sources are xenotime and euxenite, both of which are oxide mixtures that can contain up to 1% terbium.
Pronounciation (English)
TUR-bi-em

Translations

Afrikaans Terbium
Aragonese Terbio
العربية تربيوم
Armãneashte Terbiumu
asturianu Terbiu
azərbaycan dili Terbium
български Тербий
বাংলা টার্বিয়াম
brezhoneg Terbiom
bosanski Terbij[um]
Byelorussian Тэрбій
Cebuano Terbyo
čeština Terbium
Chuvash Терби
Cymraeg Terbi
dansk Terbium
Deutsch Terbium
Ελληνικά Τερβιο
English Terbium
esperanto Terbio
español Térbio
eesti Terbium
euskara Terbioa
فارسی تربیم
suomi Terbium
føroyskt Terbium
français Terbium
furlan Terbi
West-Frysk Terbium
Gaeilge Teirbiam
Gàidhlig Teirbiam
galego Terbio
ગુજરાતી ટર્બિયમનો
Gaelg Çherbium
Hakka Chinese Thi̍t (鋱)
עברית טרביום
हिन्दी टर्बियम
hrvatski Terbij
magyar Terbium
հայերեն Կերբիում
Indonesia Terbium
íslenska Terbín
italiano Terbio
日本語 テルビウム
ქართული ტერბიუმი
کٲشُر Terb
қазақ тілі Тербий
한국어 테르븀, 2터븀
Kurdish Terbiyûm
Komi Тербий
kernewek Terbyum
кыргызча Тербий
Latin Terbium
Lëtzebuergesch Terbium
Lombard Tèrbi
lingála Telebumu
lietuvių Terbis
latviešu Terbijs
Mari Тербий
Maori Terbium
македонски Тербиум
മലയാളം ടെര്‍ബിയം
монгол Терби
Мокшан Терби
Bahasa Melayu Terbium
Malti Terbju[m]
Nahuatl Terbio
Nederlands Terbium
norsk Terbium
Occitan Terbi
ирон Тербий
polski Terb
português Térbio
Runasimi Terbyu
română Terbiu
русский Тербий
slovenčina Terbium
slovenščina Terbij
Samoan Terbimi
Samogitian Terbis
shqip Terbium
српски Тербијум
Southern Sotho Terbiamo
svenska Terbium
Kiswahili Taribi
தமிழ் தெர்பியம்
Tajik Тербий
ไทย เทอร์เบียม
Türkçe Terbiyum
ئۇيغۇرچە تېربىي
українська Тербій
o‘zbek Terbiy
Tiếng Việt Tecbi
Võro Terbium
中文

History

Discovered In
1843
Discovered By
Carl Mosander
Discovered At
Sweden
Word Origin
Named after "Ytterby", a town in Sweden