Cerium (Ce)

General Properties

Symbol Ce
Atomic Number 58
Atomic Weight 140.116
Group
(Lanthanoids)
Solid, Paramagnetic, Conductor, Lanthanide, Stable, Natural
Period 6
Block f

Physical Properties

Density 6.66 g/cm3
Atomic Volume 21.0 cm3/mole
Atomic Radius 1.81 angstroms
Covalent Radius --
Crust Abundance 0.006%
Crystal Structure Cubic: Face centered
Color Silver

States

Melting Point 798.0 °C
Boiling Point 3257.0 °C
Neel Point 12.5K
Heat of Fusion 9.2 kJ/mol
Heat of Vaporization 313.8 kJ/mol

Energy

Electronegativity 1.1 (Pauling Scale)
Electron Affinity 50 kJ/mol
1st Ionization Energy 534 kJ/mol
2nd Ionization Energy 1050 kJ/mol
3rd Ionization Energy 1949 kJ/mol
4th Ionization Energy 3547 kJ/mol
5th Ionization Energy 6325 kJ/mol
6th Ionization Energy 7490 kJ/mol
Specific Heat Capacity 0.19 J g−1 K−1
Thermal Conductivity 11.4 W·m−1·K−1

Electrons & Oxidation

Oxidation States +3,4
Electrons Per Shell 2 8 18 19 9 2
Electron Configuration [Xe] 4f1 5d1 6s2
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f1 5d1 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 Cerium (Ce)
Lewis Dot Diagram of Cerium (Ce)
Description
Malleable, ductile, iron-gray metal.
Uses
Its oxides are used in the optics and glass-making industries. Its salts are used in the photography and textile industry. Used in high-intensity carbon lamps and as alloying agents in special metals.
Sources
Most abundant rare earth metal. Found in many minerals like monazite sand [Ce(PO4)].
Pronounciation (English)
SER-i-em

Translations

Afrikaans Serium
Aragonese Zerio
العربية سيريوم
Armãneashte Tseriumu
Asturian Ceriu
azərbaycan Serium
български Церий
বাংলা সেরিয়াম
brezhoneg Seriom
bosanski Cerij[um]
Byelorussian Цэрый
Cebuano Ceryo
čeština Cer
Chuvash Цери
Cymraeg Ceri
dansk Cerium
Deutsch Zer
Ελληνικά Δημητριο
English Cerium
esperanto Cerio
español Cério
eesti Tseerium
euskara Zerioa
فارسی سریم
suomi Cerium
føroyskt Cerium
français Cérium
Friulian Ceri
Western Frisian Cerium
Gaeilge Ceiriam
Scottish Gaelic Ceiriam
galego Cerio
ગુજરાતી સીરિયમનો
Gaelg Kerrium
Hakka Sṳ (鈰)
עברית סריום
हिंदी सेरियम
hrvatski Cerij
magyar Cérium
հայերեն Ցերիում
Bahasa Indonesia Serium
íslenska Serín
italiano Cerio
日本語 セリウム
ქართული ცერიუმი
کٲشُر Cer
қазақ тілі Церий
한국어 세륨
Kurdish Seryûm
Komi Церий
kernewek Keryum
кыргызча Церий
Latin Cerium
Luxembourgish Zer
Lombard Céri
lingála Selu
lietuvių Ceris
latviešu Cerijs
Mari Церий
Maori Cerium
македонски Цериум
മലയാളം സെറിയം
монгол Цери
Мокшан Цери
Bahasa Melayu Serium
Malti Sirjum, ²Ċerju
Nahuatl Cerio
Nederlands Cerium
norsk Cerium
Occitan Ceri
Ossetic Церий
polski Cer
português Cério
Quechua Seryu
română Ceriu
русский Церий
slovenčina Cér
slovenščina Cerij
Samoan Serimi
Samogitian Ceris
Shqip Cerium
Српски Церијум
Southern Sotho Seriamo
svenska Cerium
Kiswahili Seri
தமிழ் --
Tajik Серий
ไทย ซีเรียม
Türkçe Seryum
Uyghur سېرىي
українська Церій
oʻzbekcha Seriy
Tiếng Việt Xeri
Võro Tseerium
中文

History

Discovered In
1803
Discovered By
Wilhelm von Hisinger, Jöns Jacob Berzelius, Martin Klaproth
Discovered At
Sweden, Germany
Word Origin
Named after the asteroid Ceres which discovered in 1801, 2 years before the element