Cerium

Cerium (Ce)

chemical element with the atomic number of 58
Atomic Number58
Atomic Weight140.116
mass number140
Group
Period6
Blockf
proton58 p+
neutron82 n0
electron58 e-
Animated Bohr model of Ce (Cerium)

Physical Property

Atomic Radius
185 pm
molar volume
Covalent Radius
163 pm
Metallic Radius
ionic radius
101 pm
Crystal Radius
115 pm
Van der Waals radius
242 pm
density
6.77 g/cm³
Atomic Radii Of The Elements: Cerium0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

energia
proton affinity
electron affinity
ionization energy
ionization energy of Ce (Cerium)
enthalpy of vaporization
398 kJ/mol
enthalpy of fusion
5.2 kJ/mol
standard enthalpy of formation
420.1 kJ/mol
electron
Tegimen electronicum2, 8, 18, 19, 9, 2
Bohr model: Ce (Cerium)
valence electron2
Lewis structure: Ce (Cerium)
electron configuration[Xe] 4f1 5d1 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f1 5d1 6s2
Enhanced Bohr model of Ce (Cerium)
Orbital Diagram of Ce (Cerium)
oxidation number2, 3, 4
electronegativity
1.12
Electrophilicity Index
0.9792877807552266 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
3716.15 K
Melting Point
1072.15 K
critical pressure
critical temperature
Punctum triplex
appearance
Color
Silver
appearancesilvery white
refractive index
thermodynamic material property
Thermal Conductivity
11.3 W/(m K)
thermal expansion
0.0000063 1/K
molar heat capacity
26.94 J/(mol K)
Specific Heat Capacity
0.192 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
1.4 MS/m
electrical resistivity
0.00000075 m Ω
Superconductrum
0.022 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.00000022 m³/Kg
magnetic susceptibility (Molar)
0.000000030826 m³/mol
magnetic susceptibility (Volume)
0.0014716
magnetic ordering
Curie temperature
Néel temperature
12.5 K
structure
Crystal StructureSimple Hexagonal (FCC)
lattice constant
5.16 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
2.5 MPa
bulk modulus
22 GPa
shear modulus
14 GPa
Young's modulus
34 GPa
Poisson's ratio
0.24
celeritas soni
2100 m/s
classificare
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number31
Mendeleev Number15
Pettifor Number32
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
205 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
0.6
Neutron Mass Absorption
0.00021
quantum number1G4
space group194 (P63/mmc)

Isotopes of Cerium

Stable Isotopes1
Unstable Isotopes40
Natural Isotopes4
Isotopic Composition14088.45%14088.45%14211.11%14211.11%1360.19%1360.19%1380.25%1380.25%

119Ce

mass number119
neutron number61
relative atomic mass
118.952957 ± 0.000537 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas5/2
nuclear quadrupole moment
repertus
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

120Ce

mass number120
neutron number62
relative atomic mass
119.946613 ± 0.000537 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

121Ce

mass number121
neutron number63
relative atomic mass
120.943435 ± 0.00043 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
1.1 ± 0.1 s
Volubilitas5/2
nuclear quadrupole moment
repertus1997
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)1%

122Ce

mass number122
neutron number64
relative atomic mass
121.93787 ± 0.00043 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus2005
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

123Ce

mass number123
neutron number65
relative atomic mass
122.93528 ± 0.00032 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
3.8 ± 0.2 s
Volubilitas5/2
nuclear quadrupole moment
repertus1984
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

124Ce

mass number124
neutron number66
relative atomic mass
123.93031 ± 0.00032 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
9.1 ± 1.2 s
Volubilitas0
nuclear quadrupole moment
0
repertus1978
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

125Ce

mass number125
neutron number67
relative atomic mass
124.92844 ± 0.00021 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
9.7 ± 0.3 s
Volubilitas7/2
nuclear quadrupole moment
repertus1978
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
β+ p (β+-delayed proton emission)

126Ce

mass number126
neutron number68
relative atomic mass
125.923971 ± 0.00003 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
51 ± 0.3 s
Volubilitas0
nuclear quadrupole moment
0
repertus1978
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

127Ce

mass number127
neutron number69
relative atomic mass
126.922727 ± 0.000031 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
34 ± 2 s
Volubilitas1/2
nuclear quadrupole moment
0
repertus1978
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

128Ce

mass number128
neutron number70
relative atomic mass
127.918911 ± 0.00003 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
3.93 ± 0.02 m
Volubilitas0
nuclear quadrupole moment
0
repertus1968
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

129Ce

mass number129
neutron number71
relative atomic mass
128.918102 ± 0.00003 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
3.5 ± 0.3 m
Volubilitas5/2
nuclear quadrupole moment
repertus1977
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

130Ce

mass number130
neutron number72
relative atomic mass
129.914736 ± 0.00003 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
22.9 ± 0.5 m
Volubilitas0
nuclear quadrupole moment
0
repertus1965
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

131Ce

mass number131
neutron number73
relative atomic mass
130.914429465 ± 0.000035214 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
10.3 ± 0.3 m
Volubilitas7/2
nuclear quadrupole moment
repertus1966
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

132Ce

mass number132
neutron number74
relative atomic mass
131.911466226 ± 0.000021907 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
3.51 ± 0.11 h
Volubilitas0
nuclear quadrupole moment
0
repertus1960
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

133Ce

mass number133
neutron number75
relative atomic mass
132.911520402 ± 0.000017557 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
97 ± 4 m
Volubilitas1/2
nuclear quadrupole moment
0
repertus1951
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

134Ce

mass number134
neutron number76
relative atomic mass
133.908928142 ± 0.000021886 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
3.16 ± 0.04 d
Volubilitas0
nuclear quadrupole moment
0
repertus1951
parity+

decay modeintensity
ϵ (electron capture)100%

135Ce

mass number135
neutron number77
relative atomic mass
134.909160662 ± 0.000011021 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
17.7 ± 0.3 h
Volubilitas1/2
nuclear quadrupole moment
0
repertus1948
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

136Ce

mass number136
neutron number78
relative atomic mass
135.907129256 ± 0.000000348 Da
g-factor
0
natural abundance
0.186 ± 0.002
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus1936
parity+

decay modeintensity
+ (double β+ decay)

137Ce

mass number137
neutron number79
relative atomic mass
136.907762416 ± 0.000000386 Da
g-factor
0.64 ± 0.026666666666667
natural abundance
radioactivitas☢️ radioactive element
half-life
9 ± 0.3 h
Volubilitas3/2
nuclear quadrupole moment
repertus1948
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

138Ce

mass number138
neutron number80
relative atomic mass
137.90599418 ± 0.000000536 Da
g-factor
0
natural abundance
0.251 ± 0.002
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus1936
parity+

decay modeintensity
+ (double β+ decay)

139Ce

mass number139
neutron number81
relative atomic mass
138.906647029 ± 0.000002242 Da
g-factor
0.70666666666667 ± 0.026666666666667
natural abundance
radioactivitas☢️ radioactive element
half-life
137.642 ± 0.02 d
Volubilitas3/2
nuclear quadrupole moment
repertus1948
parity+

decay modeintensity
ϵ (electron capture)100%

140Ce

mass number140
neutron number82
relative atomic mass
139.905448433 ± 0.000001409 Da
g-factor
0
natural abundance
88.449 ± 0.051
radioactivitasstable isotope
half-lifeNot Radioactive ☢️
Volubilitas0
nuclear quadrupole moment
0
repertus1925
parity+

141Ce

mass number141
neutron number83
relative atomic mass
140.908285991 ± 0.000001411 Da
g-factor
0.31142857142857 ± 0.011428571428571
natural abundance
radioactivitas☢️ radioactive element
half-life
32.505 ± 0.01 d
Volubilitas7/2
nuclear quadrupole moment
repertus1948
parity-

decay modeintensity
β (β decay)100%

142Ce

mass number142
neutron number84
relative atomic mass
141.909250208 ± 0.000002623 Da
g-factor
0
natural abundance
11.114 ± 0.051
radioactivitas☢️ radioactive element
half-life
Volubilitas0
nuclear quadrupole moment
0
repertus1925
parity+

decay modeintensity
α (α emission)
(double β decay)

143Ce

mass number143
neutron number85
relative atomic mass
142.912391953 ± 0.000002621 Da
g-factor
0.28666666666667 ± 0.0066666666666667
natural abundance
radioactivitas☢️ radioactive element
half-life
33.039 ± 0.006 h
Volubilitas3/2
nuclear quadrupole moment
repertus1948
parity-

decay modeintensity
β (β decay)100%

144Ce

mass number144
neutron number86
relative atomic mass
143.913652763 ± 0.000003041 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
284.886 ± 0.025 d
Volubilitas0
nuclear quadrupole moment
0
repertus1945
parity+

decay modeintensity
β (β decay)100%

145Ce

mass number145
neutron number87
relative atomic mass
144.917265113 ± 0.000036393 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
3.01 ± 0.06 m
Volubilitas5/2
nuclear quadrupole moment
repertus1954
parity-

decay modeintensity
β (β decay)100%

146Ce

mass number146
neutron number88
relative atomic mass
145.918812294 ± 0.000015743 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
13.49 ± 0.16 m
Volubilitas0
nuclear quadrupole moment
0
repertus1953
parity+

decay modeintensity
β (β decay)100%

147Ce

mass number147
neutron number89
relative atomic mass
146.9226899 ± 0.000009211 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
56.4 ± 1 s
Volubilitas5/2
nuclear quadrupole moment
repertus1964
parity-

decay modeintensity
β (β decay)100%

148Ce

mass number148
neutron number90
relative atomic mass
147.924424186 ± 0.000012017 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
56.8 ± 0.3 s
Volubilitas0
nuclear quadrupole moment
0
repertus1964
parity+

decay modeintensity
β (β decay)100%

149Ce

mass number149
neutron number91
relative atomic mass
148.9284269 ± 0.000011 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
4.94 ± 0.04 s
Volubilitas3/2
nuclear quadrupole moment
repertus1974
parity-

decay modeintensity
β (β decay)100%

150Ce

mass number150
neutron number92
relative atomic mass
149.930384032 ± 0.000012556 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
6.05 ± 0.07 s
Volubilitas0
nuclear quadrupole moment
0
repertus1970
parity+

decay modeintensity
β (β decay)100%

151Ce

mass number151
neutron number93
relative atomic mass
150.9342722 ± 0.000019 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
1.76 ± 0.06 s
Volubilitas3/2
nuclear quadrupole moment
repertus1997
parity-

decay modeintensity
β (β decay)100%

152Ce

mass number152
neutron number94
relative atomic mass
151.936682 ± 0.000215 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
1.42 ± 0.02 s
Volubilitas0
nuclear quadrupole moment
0
repertus1990
parity+

decay modeintensity
β (β decay)100%

153Ce

mass number153
neutron number95
relative atomic mass
152.941052 ± 0.000215 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
865 ± 25 ms
Volubilitas3/2
nuclear quadrupole moment
repertus1994
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

154Ce

mass number154
neutron number96
relative atomic mass
153.94394 ± 0.000215 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
722 ± 14 ms
Volubilitas0
nuclear quadrupole moment
0
repertus1994
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

155Ce

mass number155
neutron number97
relative atomic mass
154.948706 ± 0.000322 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
313 ± 7 ms
Volubilitas5/2
nuclear quadrupole moment
repertus1994
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

156Ce

mass number156
neutron number98
relative atomic mass
155.951884 ± 0.000322 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
233 ± 9 ms
Volubilitas0
nuclear quadrupole moment
0
repertus2017
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

157Ce

mass number157
neutron number99
relative atomic mass
156.957133 ± 0.000429 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
175 ± 41 ms
Volubilitas7/2
nuclear quadrupole moment
repertus2017
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

158Ce

mass number158
neutron number100
relative atomic mass
157.960773 ± 0.000429 Da
g-factor
0
natural abundance
radioactivitas☢️ radioactive element
half-life
99 ± 93 ms
Volubilitas0
nuclear quadrupole moment
0
repertus2016
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

159Ce

mass number159
neutron number101
relative atomic mass
158.966355 ± 0.000537 Da
g-factor
natural abundance
radioactivitas☢️ radioactive element
half-life
Volubilitas1/2
nuclear quadrupole moment
0
repertus
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
CE2k2g

historia

inventorW. von Hisinger, J. Berzelius, M. Klaproth
location of discoverySweden/Germany
repertus1803
EtymologiaNamed after the asteroid, Ceres, discovered two years before the element.
pronunciationSER-i-em (English)

source

Abundance
Abundance in Earth's crust
66.5 mg/kg
natural abundance (Oceanus)
0.0000012 mg/L
natural abundance (Corpus humanum)
natural abundance (Meteoroides)
0.000075 %
natural abundance (Sol)
0.0000004 %
Abundance in Universe
0.000001 %

Nuclear Screening Constants

1s1.1519
2p4.2176
2s15.26
3d13.9147
3p19.0405
3s19.3408
4d32.3392
4f56.324
4p29.3936
4s28.32
5p41.0345
5s39.0865
6s47.2036