Seri

Seri (Ce)

chemical element with the atomic number of 58
Atomic Number58
Atomic Weight140.116
mass number140
Group
Period6
Blockf
protoni58 p+
nyutroni82 n0
elektroni58 e-
Animated Bohr model of Ce (Seri)

Physical Property

Atomic Radius
molar volume
Covalent Radius
Metallic Radius
ionic radius
Crystal Radius
Van der Waals radius
msongamano
Atomic Radii Of The Elements: Seri0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

nishati
proton affinity
electron affinity
ionization energy
ionization energy of Ce (Seri)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
elektroni
Mzingo elektroni2, 8, 18, 19, 9, 2
Bohr model: Ce (Seri)
valence electron2
Lewis structure: Ce (Seri)
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 (Seri)
Orbital Diagram of Ce (Seri)
oxidation number2, 3, 4
electronegativity
1.12
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
critical pressure
critical temperature
Kiwango utatu
appearance
Rangi
Silver
appearancesilvery white
refractive index
thermodynamic material property
Thermal Conductivity
thermal expansion
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
electrical resistivity
superconductivity
Uga sumaku
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
structure
Crystal StructureSimple Hexagonal (FCC)
lattice constant
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
shear modulus
Young's modulus
Poisson's ratio
0.24
speed of sound
classification
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number31
Mendeleev Number15
Pettifor Number32
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
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
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
spin5/2
nuclear quadrupole moment
Uvumbuzi
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

120Ce

mass number120
neutron number62
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
spin0
nuclear quadrupole moment
0
Uvumbuzi
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

121Ce

mass number121
neutron number63
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
1.1 ± 0.1 s
spin5/2
nuclear quadrupole moment
Uvumbuzi1997
parity

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

122Ce

mass number122
neutron number64
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
spin0
nuclear quadrupole moment
0
Uvumbuzi2005
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)
β+ p (β+-delayed proton emission)

123Ce

mass number123
neutron number65
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
3.8 ± 0.2 s
spin5/2
nuclear quadrupole moment
Uvumbuzi1984
parity

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

124Ce

mass number124
neutron number66
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
9.1 ± 1.2 s
spin0
nuclear quadrupole moment
0
Uvumbuzi1978
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

125Ce

mass number125
neutron number67
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
9.7 ± 0.3 s
spin7/2
nuclear quadrupole moment
Uvumbuzi1978
parity-

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

126Ce

mass number126
neutron number68
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
51 ± 0.3 s
spin0
nuclear quadrupole moment
0
Uvumbuzi1978
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

127Ce

mass number127
neutron number69
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
34 ± 2 s
spin1/2
nuclear quadrupole moment
0
Uvumbuzi1978
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

128Ce

mass number128
neutron number70
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
3.93 ± 0.02 m
spin0
nuclear quadrupole moment
0
Uvumbuzi1968
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

129Ce

mass number129
neutron number71
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
3.5 ± 0.3 m
spin5/2
nuclear quadrupole moment
Uvumbuzi1977
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

130Ce

mass number130
neutron number72
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
22.9 ± 0.5 m
spin0
nuclear quadrupole moment
0
Uvumbuzi1965
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

131Ce

mass number131
neutron number73
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
10.3 ± 0.3 m
spin7/2
nuclear quadrupole moment
Uvumbuzi1966
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

132Ce

mass number132
neutron number74
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
3.51 ± 0.11 h
spin0
nuclear quadrupole moment
0
Uvumbuzi1960
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

133Ce

mass number133
neutron number75
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
97 ± 4 m
spin1/2
nuclear quadrupole moment
0
Uvumbuzi1951
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

134Ce

mass number134
neutron number76
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
3.16 ± 0.04 d
spin0
nuclear quadrupole moment
0
Uvumbuzi1951
parity+

hali ya kuozaintensity
ϵ (electron capture)100%

135Ce

mass number135
neutron number77
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
17.7 ± 0.3 h
spin1/2
nuclear quadrupole moment
0
Uvumbuzi1948
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

136Ce

mass number136
neutron number78
Relative Atomic Mass
g-factor
0
natural abundance
0.186 ± 0.002
Unururifu☢️ radioactive element
Nusumaisha
spin0
nuclear quadrupole moment
0
Uvumbuzi1936
parity+

hali ya kuozaintensity
+ (double β+ decay)

137Ce

mass number137
neutron number79
Relative Atomic Mass
g-factor
0.64 ± 0.026666666666667
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
9 ± 0.3 h
spin3/2
nuclear quadrupole moment
Uvumbuzi1948
parity+

hali ya kuozaintensity
β+ (β+ decay; β+ = ϵ + e+)100%

138Ce

mass number138
neutron number80
Relative Atomic Mass
g-factor
0
natural abundance
0.251 ± 0.002
Unururifu☢️ radioactive element
Nusumaisha
spin0
nuclear quadrupole moment
0
Uvumbuzi1936
parity+

hali ya kuozaintensity
+ (double β+ decay)

139Ce

mass number139
neutron number81
Relative Atomic Mass
g-factor
0.70666666666667 ± 0.026666666666667
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
137.642 ± 0.02 d
spin3/2
nuclear quadrupole moment
Uvumbuzi1948
parity+

hali ya kuozaintensity
ϵ (electron capture)100%

140Ce

mass number140
neutron number82
Relative Atomic Mass
g-factor
0
natural abundance
88.449 ± 0.051
Unururifustable isotope
NusumaishaNot Radioactive ☢️
spin0
nuclear quadrupole moment
0
Uvumbuzi1925
parity+

141Ce

mass number141
neutron number83
Relative Atomic Mass
g-factor
0.31142857142857 ± 0.011428571428571
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
32.505 ± 0.01 d
spin7/2
nuclear quadrupole moment
Uvumbuzi1948
parity-

hali ya kuozaintensity
β (β decay)100%

142Ce

mass number142
neutron number84
Relative Atomic Mass
g-factor
0
natural abundance
11.114 ± 0.051
Unururifu☢️ radioactive element
Nusumaisha
spin0
nuclear quadrupole moment
0
Uvumbuzi1925
parity+

hali ya kuozaintensity
α (α emission)
(double β decay)

143Ce

mass number143
neutron number85
Relative Atomic Mass
g-factor
0.28666666666667 ± 0.0066666666666667
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
33.039 ± 0.006 h
spin3/2
nuclear quadrupole moment
Uvumbuzi1948
parity-

hali ya kuozaintensity
β (β decay)100%

144Ce

mass number144
neutron number86
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
284.886 ± 0.025 d
spin0
nuclear quadrupole moment
0
Uvumbuzi1945
parity+

hali ya kuozaintensity
β (β decay)100%

145Ce

mass number145
neutron number87
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
3.01 ± 0.06 m
spin5/2
nuclear quadrupole moment
Uvumbuzi1954
parity-

hali ya kuozaintensity
β (β decay)100%

146Ce

mass number146
neutron number88
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
13.49 ± 0.16 m
spin0
nuclear quadrupole moment
0
Uvumbuzi1953
parity+

hali ya kuozaintensity
β (β decay)100%

147Ce

mass number147
neutron number89
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
56.4 ± 1 s
spin5/2
nuclear quadrupole moment
Uvumbuzi1964
parity-

hali ya kuozaintensity
β (β decay)100%

148Ce

mass number148
neutron number90
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
56.8 ± 0.3 s
spin0
nuclear quadrupole moment
0
Uvumbuzi1964
parity+

hali ya kuozaintensity
β (β decay)100%

149Ce

mass number149
neutron number91
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
4.94 ± 0.04 s
spin3/2
nuclear quadrupole moment
Uvumbuzi1974
parity-

hali ya kuozaintensity
β (β decay)100%

150Ce

mass number150
neutron number92
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
6.05 ± 0.07 s
spin0
nuclear quadrupole moment
0
Uvumbuzi1970
parity+

hali ya kuozaintensity
β (β decay)100%

151Ce

mass number151
neutron number93
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
1.76 ± 0.06 s
spin3/2
nuclear quadrupole moment
Uvumbuzi1997
parity-

hali ya kuozaintensity
β (β decay)100%

152Ce

mass number152
neutron number94
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
1.42 ± 0.02 s
spin0
nuclear quadrupole moment
0
Uvumbuzi1990
parity+

hali ya kuozaintensity
β (β decay)100%

153Ce

mass number153
neutron number95
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
865 ± 25 ms
spin3/2
nuclear quadrupole moment
Uvumbuzi1994
parity-

hali ya kuozaintensity
β (β decay)100%
β n (β-delayed neutron emission)

154Ce

mass number154
neutron number96
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
722 ± 14 ms
spin0
nuclear quadrupole moment
0
Uvumbuzi1994
parity+

hali ya kuozaintensity
β (β decay)100%
β n (β-delayed neutron emission)

155Ce

mass number155
neutron number97
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
313 ± 7 ms
spin5/2
nuclear quadrupole moment
Uvumbuzi1994
parity-

hali ya kuozaintensity
β (β decay)100%
β n (β-delayed neutron emission)

156Ce

mass number156
neutron number98
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
233 ± 9 ms
spin0
nuclear quadrupole moment
0
Uvumbuzi2017
parity+

hali ya kuozaintensity
β (β decay)100%
β n (β-delayed neutron emission)

157Ce

mass number157
neutron number99
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
175 ± 41 ms
spin7/2
nuclear quadrupole moment
Uvumbuzi2017
parity+

hali ya kuozaintensity
β (β decay)100%
β n (β-delayed neutron emission)

158Ce

mass number158
neutron number100
Relative Atomic Mass
g-factor
0
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
99 ± 93 ms
spin0
nuclear quadrupole moment
0
Uvumbuzi2016
parity+

hali ya kuozaintensity
β (β decay)100%
β n (β-delayed neutron emission)

159Ce

mass number159
neutron number101
Relative Atomic Mass
g-factor
natural abundance
Unururifu☢️ radioactive element
Nusumaisha
spin1/2
nuclear quadrupole moment
0
Uvumbuzi
parity-

hali ya kuozaintensity
β (β decay)
β n (β-delayed neutron emission)
CE2k2g

historia

mgunduzi au mvumbuziW. von Hisinger, J. Berzelius, M. Klaproth
location of discoverySweden/Germany
Uvumbuzi1803
EtimolojiaNamed after the asteroid, Ceres, discovered two years before the element.
pronunciationSER-i-em (Kiingereza)

source

Abundance
Abundance in Earth's crust
natural abundance (Bahari)
natural abundance (Mwili)
natural abundance (Kimondo)
0.000075 %
natural abundance (Jua)
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