Sirjum, ²Ċerju

Sirjum, ²Ċerju (Ce)

chemical element with the atomic number of 58
Atomic Number58
Atomic Weight140.116
mass number140
Group
Period6
Blockf
proton58 p+
neutron82 n0
elettron58 e-
Animated Bohr model of Ce (Sirjum, ²Ċerju)

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
densità
6.77 g/cm³
Atomic Radii Of The Elements: Sirjum, ²Ċerju0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

enerġija
proton affinity
electron affinity
ionization energy
ionization energy of Ce (Sirjum, ²Ċerju)
enthalpy of vaporization
398 kJ/mol
enthalpy of fusion
5.2 kJ/mol
standard enthalpy of formation
420.1 kJ/mol
elettron
electron shell2, 8, 18, 19, 9, 2
Bohr model: Ce (Sirjum, ²Ċerju)
valence electron2
Lewis structure: Ce (Sirjum, ²Ċerju)
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 (Sirjum, ²Ċerju)
Orbital Diagram of Ce (Sirjum, ²Ċerju)
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
3,716.15 K
Melting Point
1,072.15 K
critical pressure
critical temperature
triple point
appearance
kulur
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
superconductivity
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
speed of sound
2,100 m/s
classification
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
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
time of discovery or invention
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
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention
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
radioactivity☢️ radioactive element
half-life
1.1 ± 0.1 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1997
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
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention2005
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
radioactivity☢️ radioactive element
half-life
3.8 ± 0.2 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1984
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
radioactivity☢️ radioactive element
half-life
9.1 ± 1.2 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1978
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
radioactivity☢️ radioactive element
half-life
9.7 ± 0.3 s
spin7/2
nuclear quadrupole moment
time of discovery or invention1978
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
radioactivity☢️ radioactive element
half-life
51 ± 0.3 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1978
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
radioactivity☢️ radioactive element
half-life
34 ± 2 s
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1978
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
radioactivity☢️ radioactive element
half-life
3.93 ± 0.02 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1968
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
radioactivity☢️ radioactive element
half-life
3.5 ± 0.3 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1977
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
radioactivity☢️ radioactive element
half-life
22.9 ± 0.5 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1965
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
radioactivity☢️ radioactive element
half-life
10.3 ± 0.3 m
spin7/2
nuclear quadrupole moment
time of discovery or invention1966
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
radioactivity☢️ radioactive element
half-life
3.51 ± 0.11 h
spin0
nuclear quadrupole moment
0
time of discovery or invention1960
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
radioactivity☢️ radioactive element
half-life
97 ± 4 m
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1951
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
radioactivity☢️ radioactive element
half-life
3.16 ± 0.04 d
spin0
nuclear quadrupole moment
0
time of discovery or invention1951
parity+

decay modeintensity
ϵ (electron capture)100%

135Ce

mass number135
neutron number77
relative atomic mass
134.909160662 ± 0.000011021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
17.7 ± 0.3 h
spin1/2
nuclear quadrupole moment
0
time of discovery or invention1948
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
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention1936
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
radioactivity☢️ radioactive element
half-life
9 ± 0.3 h
spin3/2
nuclear quadrupole moment
time of discovery or invention1948
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
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention1936
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
radioactivity☢️ radioactive element
half-life
137.642 ± 0.02 d
spin3/2
nuclear quadrupole moment
time of discovery or invention1948
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
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
time of discovery or invention1925
parity+

141Ce

mass number141
neutron number83
relative atomic mass
140.908285991 ± 0.000001411 Da
g-factor
0.31142857142857 ± 0.011428571428571
natural abundance
radioactivity☢️ radioactive element
half-life
32.505 ± 0.01 d
spin7/2
nuclear quadrupole moment
time of discovery or invention1948
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
radioactivity☢️ radioactive element
half-life
spin0
nuclear quadrupole moment
0
time of discovery or invention1925
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
radioactivity☢️ radioactive element
half-life
33.039 ± 0.006 h
spin3/2
nuclear quadrupole moment
time of discovery or invention1948
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
radioactivity☢️ radioactive element
half-life
284.886 ± 0.025 d
spin0
nuclear quadrupole moment
0
time of discovery or invention1945
parity+

decay modeintensity
β (β decay)100%

145Ce

mass number145
neutron number87
relative atomic mass
144.917265113 ± 0.000036393 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.01 ± 0.06 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1954
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
radioactivity☢️ radioactive element
half-life
13.49 ± 0.16 m
spin0
nuclear quadrupole moment
0
time of discovery or invention1953
parity+

decay modeintensity
β (β decay)100%

147Ce

mass number147
neutron number89
relative atomic mass
146.9226899 ± 0.000009211 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
56.4 ± 1 s
spin5/2
nuclear quadrupole moment
time of discovery or invention1964
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
radioactivity☢️ radioactive element
half-life
56.8 ± 0.3 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1964
parity+

decay modeintensity
β (β decay)100%

149Ce

mass number149
neutron number91
relative atomic mass
148.9284269 ± 0.000011 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4.94 ± 0.04 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1974
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
radioactivity☢️ radioactive element
half-life
6.05 ± 0.07 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1970
parity+

decay modeintensity
β (β decay)100%

151Ce

mass number151
neutron number93
relative atomic mass
150.9342722 ± 0.000019 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.76 ± 0.06 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1997
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
radioactivity☢️ radioactive element
half-life
1.42 ± 0.02 s
spin0
nuclear quadrupole moment
0
time of discovery or invention1990
parity+

decay modeintensity
β (β decay)100%

153Ce

mass number153
neutron number95
relative atomic mass
152.941052 ± 0.000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
865 ± 25 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention1994
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
radioactivity☢️ radioactive element
half-life
722 ± 14 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention1994
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
radioactivity☢️ radioactive element
half-life
313 ± 7 ms
spin5/2
nuclear quadrupole moment
time of discovery or invention1994
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
radioactivity☢️ radioactive element
half-life
233 ± 9 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention2017
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
radioactivity☢️ radioactive element
half-life
175 ± 41 ms
spin7/2
nuclear quadrupole moment
time of discovery or invention2017
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
radioactivity☢️ radioactive element
half-life
99 ± 93 ms
spin0
nuclear quadrupole moment
0
time of discovery or invention2016
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
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
time of discovery or invention
parity-

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

storja

discoverer or inventorW. von Hisinger, J. Berzelius, M. Klaproth
location of discoverySweden/Germany
time of discovery or invention1803
etimoloġijaNamed after the asteroid, Ceres, discovered two years before the element.
pronunciationSER-i-em (Ingliż)

source

Abundance
Abundance in Earth's crust
66.5 mg/kg
natural abundance (ocean)
0.0000012 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0.000075 %
natural abundance (Xemx)
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