Lantan

Lantan (La)

chemical element with symbol La and atomic number 57
Atomic Number57
Atomic Weight138.90547
Hejmara baristeyî139
Group3
Period6
Blockd
Proton57 p+
Notron82 n0
Kareva57 e-
Animated Bohr model of La (Lantan)

Physical Property

Atomic Radius
195 pm
molar volume
Covalent Radius
180 pm
Metallic Radius
169 pm
ionic radius
103,2 pm
Crystal Radius
117,2 pm
Van der Waals radius
243 pm
density
6,15 g/cm³
Atomic Radii Of The Elements: Lantan0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
1.013 kJ/mol
electron affinity
ionization energy
ionization energy of La (Lantan)
enthalpy of vaporization
402 kJ/mol
enthalpy of fusion
8,5 kJ/mol
standard enthalpy of formation
431 kJ/mol
Kareva
electron shell2, 8, 18, 18, 9, 2
Bohr model: La (Lantan)
valence electron2
Lewis structure: La (Lantan)
electron configuration[Xe] 5d1 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 5d1 6s2
Enhanced Bohr model of La (Lantan)
Orbital Diagram of La (Lantan)
oxidation number0, 1, 2, 3
electronegativity
1.1
Electrophilicity Index
0,894990101871977 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
3.737,15 K
Melting Point
1.193,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearancesilvery white
refractive index
thermodynamic material property
Thermal Conductivity
13,4 W/(m K)
thermal expansion
0,0000121 1/K
molar heat capacity
27,11 J/(mol K)
Specific Heat Capacity
0,195 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
1,6 MS/m
electrical resistivity
0,00000061 m Ω
superconductivity
4,88 K
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,000000011 m³/Kg
magnetic susceptibility (Molar)
0,000000001528 m³/mol
magnetic susceptibility (Volume)
0,00006761
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3,75 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
2,5 MPa
bulk modulus
28 GPa
shear modulus
14 GPa
Young's modulus
37 GPa
Poisson's ratio
0,28
Leza dengê
2.475 m/s
classification
CategoryLanthanides, Lanthanides
CAS GroupIIIA
IUPAC GroupIIIB
Glawe Number32
Mendeleev Number13
Pettifor Number33
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
991,9 kJ/mol
polarizability
215 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
8,98
Neutron Mass Absorption
0,0023
quantum number2D3/2
space group194 (P63/mmc)

Isotopes of Lanthanum

Stable Isotopes1
Unstable Isotopes41
Natural Isotopes2
Isotopic Composition13999.91%13999.91%1380.09%1380.09%

116La

Hejmara baristeyî116
neutron number59
Giraniya atomê
115,957005 ± 0,000345 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

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

117La

Hejmara baristeyî117
neutron number60
Giraniya atomê
116,950326 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
21,7 ± 1,8 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2001
parity+

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

118La

Hejmara baristeyî118
neutron number61
Giraniya atomê
117,946731 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

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

119La

Hejmara baristeyî119
neutron number62
Giraniya atomê
118,940934 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity-

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

120La

Hejmara baristeyî120
neutron number63
Giraniya atomê
119,938196 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,8 ± 0,2 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1984
parity-

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

121La

Hejmara baristeyî121
neutron number64
Giraniya atomê
120,933236 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,3 ± 0,2 s
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1988
parity-

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

122La

Hejmara baristeyî122
neutron number65
Giraniya atomê
121,93071 ± 0,00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
8,6 ± 0,5 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1984
parity-

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

123La

Hejmara baristeyî123
neutron number66
Giraniya atomê
122,9263 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
17 ± 3 s
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1978
parity-

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

124La

Hejmara baristeyî124
neutron number67
Giraniya atomê
123,924574275 ± 0,000060836 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
29,21 ± 0,17 s
spin7
nuclear quadrupole moment
dema îcadkirinê yan keşfê1978
parity

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

125La

Hejmara baristeyî125
neutron number68
Giraniya atomê
124,920815931 ± 0,000027909 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
64,8 ± 1,2 s
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1973
parity-

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

126La

Hejmara baristeyî126
neutron number69
Giraniya atomê
125,919512667 ± 0,000097163 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
54 ± 2 s
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1961
parity-

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

127La

Hejmara baristeyî127
neutron number70
Giraniya atomê
126,916375083 ± 0,000027912 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,1 ± 0,1 m
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1963
parity-

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

128La

Hejmara baristeyî128
neutron number71
Giraniya atomê
127,915592123 ± 0,000058452 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,18 ± 0,14 m
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1961
parity+

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

129La

Hejmara baristeyî129
neutron number72
Giraniya atomê
128,912695592 ± 0,000022913 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
11,6 ± 0,2 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1963
parity+

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

130La

Hejmara baristeyî130
neutron number73
Giraniya atomê
129,912369413 ± 0,000027854 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
8,7 ± 0,1 m
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1961
parity

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

131La

Hejmara baristeyî131
neutron number74
Giraniya atomê
130,91007 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
59 ± 2 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity+

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

132La

Hejmara baristeyî132
neutron number75
Giraniya atomê
131,910119047 ± 0,000039032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,59 ± 0,04 h
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity-

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

133La

Hejmara baristeyî133
neutron number76
Giraniya atomê
132,908218 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,912 ± 0,008 h
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity+

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

134La

Hejmara baristeyî134
neutron number77
Giraniya atomê
133,908514011 ± 0,000021395 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,45 ± 0,16 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity+

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

135La

Hejmara baristeyî135
neutron number78
Giraniya atomê
134,906984427 ± 0,000010126 Da
g-factor
1,48 ± 0,036
natural abundance
radioactivity☢️ radioactive element
half-life
18,91 ± 0,02 h
spin5/2
nuclear quadrupole moment
-0,4 ± 0,4
dema îcadkirinê yan keşfê1948
parity+

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

136La

Hejmara baristeyî136
neutron number79
Giraniya atomê
135,907634962 ± 0,000057081 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
9,87 ± 0,03 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1950
parity+

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

137La

Hejmara baristeyî137
neutron number80
Giraniya atomê
136,906450438 ± 0,00000176 Da
g-factor
0,77028571428571 ± 0,0017142857142857
natural abundance
radioactivity☢️ radioactive element
half-life
60 ± 20 ky
spin7/2
nuclear quadrupole moment
0,21 ± 0,04
dema îcadkirinê yan keşfê1948
parity+

decay modeintensity
ϵ (electron capture)100%

138La

Hejmara baristeyî138
neutron number81
Giraniya atomê
137,907124041 ± 0,000000446 Da
g-factor
0,74168 ± 0,00004
natural abundance
0,08881 ± 0,00071
radioactivity☢️ radioactive element
half-life
103 ± 1 Gy
spin5
nuclear quadrupole moment
0,39 ± 0,03
dema îcadkirinê yan keşfê1947
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)65.5%
β (β decay)34.5%

139La

Hejmara baristeyî139
neutron number82
Giraniya atomê
138,906362927 ± 0,000000651 Da
g-factor
0,79402857142857 ± 0,000057142857142857
natural abundance
99,91119 ± 0,00071
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin7/2
nuclear quadrupole moment
0,206 ± 0,004
dema îcadkirinê yan keşfê1924
parity+

140La

Hejmara baristeyî140
neutron number83
Giraniya atomê
139,909487285 ± 0,000000651 Da
g-factor
0,24333333333333 ± 0,005
natural abundance
radioactivity☢️ radioactive element
half-life
40,289 ± 0,004 h
spin3
nuclear quadrupole moment
0,087 ± 0,013
dema îcadkirinê yan keşfê1935
parity-

decay modeintensity
β (β decay)100%

141La

Hejmara baristeyî141
neutron number84
Giraniya atomê
140,910971155 ± 0,00000443 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,92 ± 0,03 h
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity+

decay modeintensity
β (β decay)100%

142La

Hejmara baristeyî142
neutron number85
Giraniya atomê
141,91409076 ± 0,000006748 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
91,1 ± 0,5 m
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1953
parity-

decay modeintensity
β (β decay)100%

143La

Hejmara baristeyî143
neutron number86
Giraniya atomê
142,916079482 ± 0,000007868 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
14,2 ± 0,1 m
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity

decay modeintensity
β (β decay)100%

144La

Hejmara baristeyî144
neutron number87
Giraniya atomê
143,919645589 ± 0,000013888 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
44 ± 0,7 s
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1967
parity-

decay modeintensity
β (β decay)100%

145La

Hejmara baristeyî145
neutron number88
Giraniya atomê
144,921808065 ± 0,00001317 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24,8 ± 2 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1974
parity+

decay modeintensity
β (β decay)100%

146La

Hejmara baristeyî146
neutron number89
Giraniya atomê
145,925688017 ± 0,000001797 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
9,9 ± 0,1 s
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1970
parity-

decay modeintensity
β (β decay)100%

147La

Hejmara baristeyî147
neutron number90
Giraniya atomê
146,9284178 ± 0,0000115 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,026 ± 0,02 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1979
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.041%

148La

Hejmara baristeyî148
neutron number91
Giraniya atomê
147,9326794 ± 0,0000209 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,414 ± 0,025 s
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1969
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)0.18%

149La

Hejmara baristeyî149
neutron number92
Giraniya atomê
148,935351259 ± 0,00021499 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,071 ± 0,022 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1979
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)1.43%

150La

Hejmara baristeyî150
neutron number93
Giraniya atomê
149,9395475 ± 0,0000027 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
504 ± 15 ms
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1993
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)2.7%

151La

Hejmara baristeyî151
neutron number94
Giraniya atomê
150,942769 ± 0,0004675 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
465 ± 24 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1994
parity+

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

152La

Hejmara baristeyî152
neutron number95
Giraniya atomê
151,947085 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
287 ± 16 ms
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1994
parity-

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

153La

Hejmara baristeyî153
neutron number96
Giraniya atomê
152,950553 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
245 ± 18 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1994
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

154La

Hejmara baristeyî154
neutron number97
Giraniya atomê
153,955416 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
161 ± 15 ms
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

155La

Hejmara baristeyî155
neutron number98
Giraniya atomê
154,95928 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
101 ± 28 ms
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2016
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)
2n (2-neutron emission)

156La

Hejmara baristeyî156
neutron number99
Giraniya atomê
155,964519 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
84 ± 78 ms
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity+

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

157La

Hejmara baristeyî157
neutron number100
Giraniya atomê
156,968792 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê2018
parity+

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Lanthan 1-cropflipped

dîrok

kaşîf an îcadkerCarl Mosander
location of discoverySweden
dema îcadkirinê yan keşfê1839
BêjenasîGreek: lanthanein (to be hidden).
pronunciationLAN-the-nem (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
0,0000034 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0,000028 %
natural abundance (Roj)
0,0000002 %
Abundance in Universe
0,0000002 %

Nuclear Screening Constants

1s1.1317
2p4.2044
2s15.0466
3d13.9398
3p18.8604
3s19.0569
4d32.2748
4f55.64
4p29.2936
4s28.2036
5p41.104
5s39.189
6s47.688