Lanthanum

Lanthanum (La)

chemical element with symbol La and atomic number 57
Atomic Number57
Atomic Weight138.90547
Nombor jisim139
Group3
Period6
Blockd
proton57 p+
neutron82 n0
Elektron57 e-
Animated Model Bohr of La (Lanthanum)

Sifat Fizikal

Jejari Atom
195 pm
molar volume
Jejari kovalen
180 pm
Metallic Radius
169 pm
ionic radius
103.2 pm
Crystal Radius
117.2 pm
Jejari van der Waals
243 pm
ketumpatan
6.15 g/cm³
Atomic Radii Of The Elements: Lanthanum0255075100125150175200225250pmJejari AtomJejari KovalenMetallic RadiusJejari van der Waals

Sifat Kimia

tenaga
proton affinity
1,013 kJ/mol
Pertalian elektron
ionization energy
ionization energy of La (Lanthanum)
Entalpi pengewapan
402 kJ/mol
entalpi pelakuran
8.5 kJ/mol
standard enthalpy of formation
431 kJ/mol
Elektron
Petala elektron2, 8, 18, 18, 9, 2
Model Bohr: La (Lanthanum)
Elektron valens2
Teori ion Lewis: La (Lanthanum)
tatarajah elektron[Xe] 5d1 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 5d1 6s2
Enhanced Model Bohr of La (Lanthanum)
Orbital Diagram of La (Lanthanum)
Keadaan pengoksidaan0, 1, 2, 3
Keelektronegatifan
1.1
Electrophilicity Index
0.894990101871977 eV/particle
keadaan jirim asas
fasa jirimSolid
gaseous state of matter
Boiling Point
3,737.15 K
Melting Point
1,193.15 K
critical pressure
critical temperature
triple point
rupa
warna
Silver
rupasilvery white
indeks biasan
sifat bahan
Thermal Conductivity
13.4 W/(m K)
Pengembangan terma
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
Kekonduksian elektrik
1.6 MS/m
Kerintangan dan kekonduksian elektrik
0.00000061 m Ω
Kesuperkonduksian
4.88 K
kemagnetan
typeparamagnetic
magnetic susceptibility (Mass)
0.000000011 m³/Kg
magnetic susceptibility (Molar)
0.000000001528 m³/mol
magnetic susceptibility (Volume)
0.00006761
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3.75 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
2.5 MPa
Modulus pukal
28 GPa
shear modulus
14 GPa
Young's modulus
37 GPa
Nisbah Poisson
0.28
Kelajuan bunyi
2,475 m/s
pengelasan
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
Nombor kuantum2D3/2
space group194 (P63/mmc)

Isotopes of Lanthanum

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

116La

Nombor jisim116
nombor neutron59
jisim atom relatif
115.957005 ± 0.000345 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin
nuclear quadrupole moment
tarikh penemuan
parity

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

117La

Nombor jisim117
nombor neutron60
jisim atom relatif
116.950326 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
21.7 ± 1.8 ms
Spin3/2
nuclear quadrupole moment
tarikh penemuan2001
parity+

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

118La

Nombor jisim118
nombor neutron61
jisim atom relatif
117.946731 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin1
nuclear quadrupole moment
tarikh penemuan
parity-

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

119La

Nombor jisim119
nombor neutron62
jisim atom relatif
118.940934 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin11/2
nuclear quadrupole moment
tarikh penemuan
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)

120La

Nombor jisim120
nombor neutron63
jisim atom relatif
119.938196 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
2.8 ± 0.2 s
Spin1
nuclear quadrupole moment
tarikh penemuan1984
parity-

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

121La

Nombor jisim121
nombor neutron64
jisim atom relatif
120.933236 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.3 ± 0.2 s
Spin11/2
nuclear quadrupole moment
tarikh penemuan1988
parity-

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

122La

Nombor jisim122
nombor neutron65
jisim atom relatif
121.93071 ± 0.00032 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
8.6 ± 0.5 s
Spin1
nuclear quadrupole moment
tarikh penemuan1984
parity-

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

123La

Nombor jisim123
nombor neutron66
jisim atom relatif
122.9263 ± 0.00021 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
17 ± 3 s
Spin11/2
nuclear quadrupole moment
tarikh penemuan1978
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

124La

Nombor jisim124
nombor neutron67
jisim atom relatif
123.924574275 ± 0.000060836 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
29.21 ± 0.17 s
Spin7
nuclear quadrupole moment
tarikh penemuan1978
parity

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

125La

Nombor jisim125
nombor neutron68
jisim atom relatif
124.920815931 ± 0.000027909 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
64.8 ± 1.2 s
Spin11/2
nuclear quadrupole moment
tarikh penemuan1973
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

126La

Nombor jisim126
nombor neutron69
jisim atom relatif
125.919512667 ± 0.000097163 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
54 ± 2 s
Spin5
nuclear quadrupole moment
tarikh penemuan1961
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

127La

Nombor jisim127
nombor neutron70
jisim atom relatif
126.916375083 ± 0.000027912 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.1 ± 0.1 m
Spin11/2
nuclear quadrupole moment
tarikh penemuan1963
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

128La

Nombor jisim128
nombor neutron71
jisim atom relatif
127.915592123 ± 0.000058452 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
5.18 ± 0.14 m
Spin5
nuclear quadrupole moment
tarikh penemuan1961
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

129La

Nombor jisim129
nombor neutron72
jisim atom relatif
128.912695592 ± 0.000022913 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
11.6 ± 0.2 m
Spin3/2
nuclear quadrupole moment
tarikh penemuan1963
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

130La

Nombor jisim130
nombor neutron73
jisim atom relatif
129.912369413 ± 0.000027854 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
8.7 ± 0.1 m
Spin3
nuclear quadrupole moment
tarikh penemuan1961
parity

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

131La

Nombor jisim131
nombor neutron74
jisim atom relatif
130.91007 ± 0.00003 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
59 ± 2 m
Spin3/2
nuclear quadrupole moment
tarikh penemuan1951
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

132La

Nombor jisim132
nombor neutron75
jisim atom relatif
131.910119047 ± 0.000039032 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.59 ± 0.04 h
Spin2
nuclear quadrupole moment
tarikh penemuan1951
parity-

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

133La

Nombor jisim133
nombor neutron76
jisim atom relatif
132.908218 ± 0.00003 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.912 ± 0.008 h
Spin5/2
nuclear quadrupole moment
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

134La

Nombor jisim134
nombor neutron77
jisim atom relatif
133.908514011 ± 0.000021395 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
6.45 ± 0.16 m
Spin1
nuclear quadrupole moment
tarikh penemuan1951
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

135La

Nombor jisim135
nombor neutron78
jisim atom relatif
134.906984427 ± 0.000010126 Da
g-factor
1.48 ± 0.036
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
18.91 ± 0.02 h
Spin5/2
nuclear quadrupole moment
-0.4 ± 0.4
tarikh penemuan1948
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

136La

Nombor jisim136
nombor neutron79
jisim atom relatif
135.907634962 ± 0.000057081 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
9.87 ± 0.03 m
Spin1
nuclear quadrupole moment
tarikh penemuan1950
parity+

decay modeKeamatan (fizik)
β+ (β+ decay; β+ = ϵ + e+)100%

137La

Nombor jisim137
nombor neutron80
jisim atom relatif
136.906450438 ± 0.00000176 Da
g-factor
0.77028571428571 ± 0.0017142857142857
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
60 ± 20 ky
Spin7/2
nuclear quadrupole moment
0.21 ± 0.04
tarikh penemuan1948
parity+

decay modeKeamatan (fizik)
ϵ (electron capture)100%

138La

Nombor jisim138
nombor neutron81
jisim atom relatif
137.907124041 ± 0.000000446 Da
g-factor
0.74168 ± 0.00004
natural abundance
0.08881 ± 0.00071
Reputan radioaktif☢️ radioactive element
setengah hayat
103 ± 1 Gy
Spin5
nuclear quadrupole moment
0.39 ± 0.03
tarikh penemuan1947
parity+

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

139La

Nombor jisim139
nombor neutron82
jisim atom relatif
138.906362927 ± 0.000000651 Da
g-factor
0.79402857142857 ± 0.000057142857142857
natural abundance
99.91119 ± 0.00071
Reputan radioaktifIsotop stabil
setengah hayatNot Radioactive ☢️
Spin7/2
nuclear quadrupole moment
0.206 ± 0.004
tarikh penemuan1924
parity+

140La

Nombor jisim140
nombor neutron83
jisim atom relatif
139.909487285 ± 0.000000651 Da
g-factor
0.24333333333333 ± 0.005
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
40.289 ± 0.004 h
Spin3
nuclear quadrupole moment
0.087 ± 0.013
tarikh penemuan1935
parity-

decay modeKeamatan (fizik)
β (β decay)100%

141La

Nombor jisim141
nombor neutron84
jisim atom relatif
140.910971155 ± 0.00000443 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
3.92 ± 0.03 h
Spin7/2
nuclear quadrupole moment
tarikh penemuan1951
parity+

decay modeKeamatan (fizik)
β (β decay)100%

142La

Nombor jisim142
nombor neutron85
jisim atom relatif
141.91409076 ± 0.000006748 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
91.1 ± 0.5 m
Spin2
nuclear quadrupole moment
tarikh penemuan1953
parity-

decay modeKeamatan (fizik)
β (β decay)100%

143La

Nombor jisim143
nombor neutron86
jisim atom relatif
142.916079482 ± 0.000007868 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
14.2 ± 0.1 m
Spin7/2
nuclear quadrupole moment
tarikh penemuan1951
parity

decay modeKeamatan (fizik)
β (β decay)100%

144La

Nombor jisim144
nombor neutron87
jisim atom relatif
143.919645589 ± 0.000013888 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
44 ± 0.7 s
Spin3
nuclear quadrupole moment
tarikh penemuan1967
parity-

decay modeKeamatan (fizik)
β (β decay)100%

145La

Nombor jisim145
nombor neutron88
jisim atom relatif
144.921808065 ± 0.00001317 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
24.8 ± 2 s
Spin5/2
nuclear quadrupole moment
tarikh penemuan1974
parity+

decay modeKeamatan (fizik)
β (β decay)100%

146La

Nombor jisim146
nombor neutron89
jisim atom relatif
145.925688017 ± 0.000001797 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
9.9 ± 0.1 s
Spin5
nuclear quadrupole moment
tarikh penemuan1970
parity-

decay modeKeamatan (fizik)
β (β decay)100%

147La

Nombor jisim147
nombor neutron90
jisim atom relatif
146.9284178 ± 0.0000115 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
4.026 ± 0.02 s
Spin5/2
nuclear quadrupole moment
tarikh penemuan1979
parity+

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

148La

Nombor jisim148
nombor neutron91
jisim atom relatif
147.9326794 ± 0.0000209 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.414 ± 0.025 s
Spin2
nuclear quadrupole moment
tarikh penemuan1969
parity-

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

149La

Nombor jisim149
nombor neutron92
jisim atom relatif
148.935351259 ± 0.00021499 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
1.071 ± 0.022 s
Spin3/2
nuclear quadrupole moment
tarikh penemuan1979
parity-

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

150La

Nombor jisim150
nombor neutron93
jisim atom relatif
149.9395475 ± 0.0000027 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
504 ± 15 ms
Spin3
nuclear quadrupole moment
tarikh penemuan1993
parity+

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

151La

Nombor jisim151
nombor neutron94
jisim atom relatif
150.942769 ± 0.0004675 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
465 ± 24 ms
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1994
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

152La

Nombor jisim152
nombor neutron95
jisim atom relatif
151.947085 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
287 ± 16 ms
Spin2
nuclear quadrupole moment
tarikh penemuan1994
parity-

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

153La

Nombor jisim153
nombor neutron96
jisim atom relatif
152.950553 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
245 ± 18 ms
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan1994
parity+

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

154La

Nombor jisim154
nombor neutron97
jisim atom relatif
153.955416 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
161 ± 15 ms
Spin2
nuclear quadrupole moment
tarikh penemuan2017
parity-

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

155La

Nombor jisim155
nombor neutron98
jisim atom relatif
154.95928 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
101 ± 28 ms
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan2016
parity+

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

156La

Nombor jisim156
nombor neutron99
jisim atom relatif
155.964519 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
84 ± 78 ms
Spin4
nuclear quadrupole moment
tarikh penemuan2017
parity+

decay modeKeamatan (fizik)
β (β decay)100%
β n (β-delayed neutron emission)

157La

Nombor jisim157
nombor neutron100
jisim atom relatif
156.968792 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif☢️ radioactive element
setengah hayat
Spin1/2
nuclear quadrupole moment
0
tarikh penemuan2018
parity+

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

sejarah

penemu atau perekaCarl Mosander
tempat penemuanSweden
tarikh penemuan1839
EtimologiGreek: lanthanein (to be hidden).
sebutanLAN-the-nem (Inggeris)

sumber

Abundance
Abundance in Earth's crust
natural abundance (lautan)
0.0000034 mg/L
natural abundance (Tubuh manusia)
natural abundance (Meteoroid)
0.000028 %
natural abundance (Matahari)
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