58
Ce
Cerium
140.1161
Basic Information
Bohr Model
Descriptive Numbers
Mass
Periodic Position
Classification
Abundance
Color
Atomic Radius
Temperature
Density
Heat
Speed of Sound
Electrical Resistance
Magnetic Properties
Elasticity
Hardness
Etymology
Discovery & Isolation
Production & Use
Radioactivity
Electron Affinity
Dipole Polarity
Lattice
Electron & Quantum
List of Compounds
Basic Information
Bohr Model
Static
Interactive
Descriptive Numbers
CAS Number
7440-45-1
CID Number
CID23974
DOT Number
1333
Mendeleev Number
15
Pettifor Number
32
Space Group Number
194
Glawe Number
31
Mass
Atomic Mass
140.1161 Da
Uncertainty
0.001
Periodic Position
X Position
5
Y Position
8
Period
6
Group
N/A
Classification
Block
f
Category
Lanthanides
Geochemical
Rare Earth and Similars
Goldschmidt
Lithophilic
Electrical Type
Conductive
Abundance
Seawater
1.2e-12 kg/L
Sun
0.000001 mole ratio to silicon
Earth Crust
0.000067 g
Solar System
0.0000011 mole ratio to silicon
Meteorites
0.000075 %
Color
Jmol
#FFFFC7
Molcas Gv
#FFFFC7
CPK
#FF1493
Atomic Radius
Empirical
185
Calculated
185
Rahm
282
Uff
355.6
Mm3
274
Alvarez
288
Covalent (Single Bound)
165
Covalent (Triple Bound)
131
Covalent (Cordero)
204
Covalent (Pyykko)
163
Covalent (Pyykko Double)
137
Covalent (Pyykko Triple)
131
Metallic
181.8
Temperature
Melting/Freeze (USE)
1068 °K
Melting/Freeze (WEL)
1068 °K
Melting/Freeze (CRC)
1071 °K
Melting/Freeze (LNG)
1068 °K
Boiling/Density (USE)
3716 °K
Boiling/Density (WEL)
3633 °K
Boiling/Density (CRC)
3716 °K
Boiling/Density (LNG)
3713 °K
Boiling/Density (Zhang)
3743 °K
Superconducting Point
0.02 °K
Density
STP
6.77 kg/cm³
Solid (WEL)
6689 kg/cm³
Solid (CRC)
6770 kg/cm³
Solid (LNG)
6773 kg/cm³
Liquid (CR2)
6550 kg/cm³
Heat
Molar Volume
20.69 cm³/mol
Atomic Volume
21 cm³
Heat Of Fusion USE
5.2 kJ/mol
Heat Of Fusion CRC
5.46 kJ/mol
Heat Of Fusion LNG
5.46 kJ/mol
Heat Of Fusion WEL
5.5 kJ/mol
Evaporation USE
398 kJ/mol
Evaporation LNG
398 kJ/mol
Evaporation WEL
350 kJ/mol
Evaporation Zhang
398 kJ/mol
Molar Heat
26.94 J/molK
Heat Capacity USE
0.205 J/gK
Heat Capacity CRC
26.94 J/gK
Heat Capacity LNG
26.9 J/gK
Heat Capacity WEL
26.9 J/gK
Thermal Conductivity
11.3 W/m*K
Thermal Expansion
0.0000063 1/K
Adiabatic Index
N/A
Speed of Sound
Extensional
2100 m/s
Electrical Resistance
293k
828 nΩm
Magnetic Properties
Order
paramanyetic
Neel Point
12.5 Tn
Susceptibility
2.2e-7 m3/kg
Elasticity
Shear Modulus
13.5 GPa
Bulk Modulus
21.5 GPa
Poisson Ratio
0.24 ν
Youngs Modulus
33.6 GPa
Hardness
Mohs
2.5
Brinell
186–412
Vickers
210–470
Etymology
Description
It is a silvery element found between metals and lanthanides. Four natural isotopes and 15 radioactive isotopes have been found. It is found in some rare earth alloys. Its oxidized form is used in the glass industry. It was discovered in 1803 by Martin H. Klaproth.
Language Of Origin
Latin
Origin Of Word
From the Ceres meteorite, which was newly discovered at the time and thought to be a planet.
Meaning
grain, bread
Symbol Origin
astrological, mythological
Etymological Description
It comes from the name of the Ceres meteorite, which was discovered two years ago (This meteorite, which is now classified as a dwarf planet, was named after Ceres, the goddess of fertility in Roman mythology). Ceres is derived from the Proto-Indo-European root *ker-, meaning "to grow", as *ker-es-.
Discovery & Isolation
Observed/Predicted By
H. Klaproth, J. Berzelius ve W. Hisinger
Observed/Discovery Year
1803
Discovery Location
Isolated Sample By
Mr. Mosander
Isolated Sample Year
1838
Production & Use
Sources
It is the most abundant rare earth metal. It is found in many minerals such as monazite sand [Ce(PO4)].
Uses
As an alloying agent in high-density carbon lamps and special metals; oxides, in the optical and glass industry; Its salts are used in photography and the textile industry.
Radioactivity
Half Life
Stable
Lifetime
Stable
Neutron Mass Absorption
0.00021
Neutron Cross Section
0.6
Electron Affinity
Electron Affinity (eV)
0.65
Electron Affinity (kJ/mol)
55
Electron Affinity (pauling)
1.12
Electron Affinity (ghosh)
0.16761
Dipole Polarity
Accepted
205
Uncertainty
20
C6 GB
3480
Lattice
Constant Internal Default Radius
5.16
Constant
362, 362, 599
Strucutre
FCC
Angles
π/2, π/2, 2 π/3
Electron & Quantum
Oxidation States
2,3,4
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1 4f1
Quantum Number
1G4
Electron Configuration Semantic
[Rook] 4f1 5d1 6s2
Shells-0
2
Shells-1
8
Shells-2
18
Shells-3
19
Shells-4
9
Shells-5
2
Ionization Energies-0
534.4
Ionization Energies-1
1050
Ionization Energies-2
1949
Ionization Energies-3
3547
Ionization Energies-4
6325
Ionization Energies-5
7490
List of Compounds
1-10 of 55 compounds
| Formula | Names |
|---|---|
| Ce | cerium cerium metal |
| CeBr3 | cerium(III) bromide cerium tribromide cerous bromide tribromocerium |
| CeC2Ce | cerium carbide cerium dicarbide |
| CeB6 | cerium boride |
| CeCl3 | cerous chloride cerium chloride cerium(III) chloride cerium trichloride trichlorocerium |
| CeF3 | cerium fluoride cerium(III) fluoride cerium trifluoride cerous fluoride trifluorocerium |
| CeF4 | cerium(IV)fluoride ceric fluoride cerium fluoride cerium(IV) fluoride, anhydrous tetrafluorocerium |
| CeH3 | cerium(III) hydride |
| CeI3 | cerium(III) iodide cerium iodide cerium triiodide cerous iodide cerous triiodide triiodocerium |
| CeN | cerium nitride |
