Ceri

Ceri (Ce)

chemical element with the atomic number of 58
Atomic Number58
Atomic Weight140.116
Rhif màs140
Group
Period6
Blockf
Proton58 p+
Niwtron82 n0
Electron58 e-
Animated Bohr model of Ce (Ceri)

Nodwedd Ffisegol

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: Ceri0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Ce (Ceri)
enthalpy of vaporization
398 kJ/mol
enthalpy of fusion
5.2 kJ/mol
standard enthalpy of formation
420.1 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 19, 9, 2
Bohr model: Ce (Ceri)
valence electron2
Lewis structure: Ce (Ceri)
trefn yr electronnau[Xe] 4f1 5d1 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f1 5d1 6s2
Enhanced Bohr model of Ce (Ceri)
Orbital Diagram of Ce (Ceri)
Cyflwr ocsidiad2, 3, 4
Electronegatifedd
1.12
Electrophilicity Index
0.9792877807552266 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
3,716.15 K
Melting Point
1,072.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearancesilvery white
Mynegrif plygiant
nodwedd ffisegol gwrthrych
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
dargludedd trydanol
1.4 MS/m
Gwrthedd
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
strwythur
Crystal StructureSimple Hexagonal (FCC)
lattice constant
5.16 Å
Lattice Anglesπ/2, π/2, 2 π/3
nodwedd mecanyddol deunyddiau
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

Rhif màs119
neutron number61
relative atomic mass
118.952957 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod
parity+

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

120Ce

Rhif màs120
neutron number62
relative atomic mass
119.946613 ± 0.000537 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod
parity+

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

121Ce

Rhif màs121
neutron number63
relative atomic mass
120.943435 ± 0.00043 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.1 ± 0.1 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1997
parity

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

122Ce

Rhif màs122
neutron number64
relative atomic mass
121.93787 ± 0.00043 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod2005
parity+

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

123Ce

Rhif màs123
neutron number65
relative atomic mass
122.93528 ± 0.00032 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.8 ± 0.2 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1984
parity

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

124Ce

Rhif màs124
neutron number66
relative atomic mass
123.93031 ± 0.00032 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.1 ± 1.2 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

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

125Ce

Rhif màs125
neutron number67
relative atomic mass
124.92844 ± 0.00021 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.7 ± 0.3 s
spin7/2
nuclear quadrupole moment
dyddiad darganfod1978
parity-

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

126Ce

Rhif màs126
neutron number68
relative atomic mass
125.923971 ± 0.00003 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
51 ± 0.3 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

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

127Ce

Rhif màs127
neutron number69
relative atomic mass
126.922727 ± 0.000031 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
34 ± 2 s
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1978
parity+

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

128Ce

Rhif màs128
neutron number70
relative atomic mass
127.918911 ± 0.00003 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.93 ± 0.02 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1968
parity+

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

129Ce

Rhif màs129
neutron number71
relative atomic mass
128.918102 ± 0.00003 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.5 ± 0.3 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1977
parity+

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

130Ce

Rhif màs130
neutron number72
relative atomic mass
129.914736 ± 0.00003 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
22.9 ± 0.5 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1965
parity+

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

131Ce

Rhif màs131
neutron number73
relative atomic mass
130.914429465 ± 0.000035214 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
10.3 ± 0.3 m
spin7/2
nuclear quadrupole moment
dyddiad darganfod1966
parity+

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

132Ce

Rhif màs132
neutron number74
relative atomic mass
131.911466226 ± 0.000021907 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.51 ± 0.11 h
spin0
nuclear quadrupole moment
0
dyddiad darganfod1960
parity+

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

133Ce

Rhif màs133
neutron number75
relative atomic mass
132.911520402 ± 0.000017557 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
97 ± 4 m
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1951
parity+

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

134Ce

Rhif màs134
neutron number76
relative atomic mass
133.908928142 ± 0.000021886 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.16 ± 0.04 d
spin0
nuclear quadrupole moment
0
dyddiad darganfod1951
parity+

decay modeintensity
ϵ (electron capture)100%

135Ce

Rhif màs135
neutron number77
relative atomic mass
134.909160662 ± 0.000011021 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17.7 ± 0.3 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1948
parity+

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

136Ce

Rhif màs136
neutron number78
relative atomic mass
135.907129256 ± 0.000000348 Da
g-factor
0
natural abundance
0.186 ± 0.002
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1936
parity+

decay modeintensity
+ (double β+ decay)

137Ce

Rhif màs137
neutron number79
relative atomic mass
136.907762416 ± 0.000000386 Da
g-factor
0.64 ± 0.026666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9 ± 0.3 h
spin3/2
nuclear quadrupole moment
dyddiad darganfod1948
parity+

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

138Ce

Rhif màs138
neutron number80
relative atomic mass
137.90599418 ± 0.000000536 Da
g-factor
0
natural abundance
0.251 ± 0.002
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1936
parity+

decay modeintensity
+ (double β+ decay)

139Ce

Rhif màs139
neutron number81
relative atomic mass
138.906647029 ± 0.000002242 Da
g-factor
0.70666666666667 ± 0.026666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
137.642 ± 0.02 d
spin3/2
nuclear quadrupole moment
dyddiad darganfod1948
parity+

decay modeintensity
ϵ (electron capture)100%

140Ce

Rhif màs140
neutron number82
relative atomic mass
139.905448433 ± 0.000001409 Da
g-factor
0
natural abundance
88.449 ± 0.051
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
dyddiad darganfod1925
parity+

141Ce

Rhif màs141
neutron number83
relative atomic mass
140.908285991 ± 0.000001411 Da
g-factor
0.31142857142857 ± 0.011428571428571
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
32.505 ± 0.01 d
spin7/2
nuclear quadrupole moment
dyddiad darganfod1948
parity-

decay modeintensity
β (β decay)100%

142Ce

Rhif màs142
neutron number84
relative atomic mass
141.909250208 ± 0.000002623 Da
g-factor
0
natural abundance
11.114 ± 0.051
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin0
nuclear quadrupole moment
0
dyddiad darganfod1925
parity+

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

143Ce

Rhif màs143
neutron number85
relative atomic mass
142.912391953 ± 0.000002621 Da
g-factor
0.28666666666667 ± 0.0066666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
33.039 ± 0.006 h
spin3/2
nuclear quadrupole moment
dyddiad darganfod1948
parity-

decay modeintensity
β (β decay)100%

144Ce

Rhif màs144
neutron number86
relative atomic mass
143.913652763 ± 0.000003041 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
284.886 ± 0.025 d
spin0
nuclear quadrupole moment
0
dyddiad darganfod1945
parity+

decay modeintensity
β (β decay)100%

145Ce

Rhif màs145
neutron number87
relative atomic mass
144.917265113 ± 0.000036393 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.01 ± 0.06 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1954
parity-

decay modeintensity
β (β decay)100%

146Ce

Rhif màs146
neutron number88
relative atomic mass
145.918812294 ± 0.000015743 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
13.49 ± 0.16 m
spin0
nuclear quadrupole moment
0
dyddiad darganfod1953
parity+

decay modeintensity
β (β decay)100%

147Ce

Rhif màs147
neutron number89
relative atomic mass
146.9226899 ± 0.000009211 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
56.4 ± 1 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1964
parity-

decay modeintensity
β (β decay)100%

148Ce

Rhif màs148
neutron number90
relative atomic mass
147.924424186 ± 0.000012017 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
56.8 ± 0.3 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1964
parity+

decay modeintensity
β (β decay)100%

149Ce

Rhif màs149
neutron number91
relative atomic mass
148.9284269 ± 0.000011 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.94 ± 0.04 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1974
parity-

decay modeintensity
β (β decay)100%

150Ce

Rhif màs150
neutron number92
relative atomic mass
149.930384032 ± 0.000012556 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.05 ± 0.07 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1970
parity+

decay modeintensity
β (β decay)100%

151Ce

Rhif màs151
neutron number93
relative atomic mass
150.9342722 ± 0.000019 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.76 ± 0.06 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1997
parity-

decay modeintensity
β (β decay)100%

152Ce

Rhif màs152
neutron number94
relative atomic mass
151.936682 ± 0.000215 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.42 ± 0.02 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1990
parity+

decay modeintensity
β (β decay)100%

153Ce

Rhif màs153
neutron number95
relative atomic mass
152.941052 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
865 ± 25 ms
spin3/2
nuclear quadrupole moment
dyddiad darganfod1994
parity-

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

154Ce

Rhif màs154
neutron number96
relative atomic mass
153.94394 ± 0.000215 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
722 ± 14 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod1994
parity+

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

155Ce

Rhif màs155
neutron number97
relative atomic mass
154.948706 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
313 ± 7 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod1994
parity-

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

156Ce

Rhif màs156
neutron number98
relative atomic mass
155.951884 ± 0.000322 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
233 ± 9 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod2017
parity+

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

157Ce

Rhif màs157
neutron number99
relative atomic mass
156.957133 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
175 ± 41 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod2017
parity+

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

158Ce

Rhif màs158
neutron number100
relative atomic mass
157.960773 ± 0.000429 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
99 ± 93 ms
spin0
nuclear quadrupole moment
0
dyddiad darganfod2016
parity+

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

159Ce

Rhif màs159
neutron number101
relative atomic mass
158.966355 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod
parity-

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

hanes

darganfyddwr neu ddyfeisiwrW. von Hisinger, J. Berzelius, M. Klaproth
man darganfodSweden/Germany
dyddiad darganfod1803
geirdarddiadNamed after the asteroid, Ceres, discovered two years before the element.
ynganiadSER-i-em (Saesneg)

source

Abundance
Abundance in Earth's crust
66.5 mg/kg
natural abundance (cefnfor)
0.0000012 mg/L
natural abundance (corff dynol)
natural abundance (Awyrfaen)
0.000075 %
natural abundance (Haul)
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