Лантан

Лантан (La)

chemical element with symbol La and atomic number 57
Atomic Number57
Atomic Weight138.90547
Адади массавӣ139
Group3
Period6
Blockd
proton57 p+
neutron82 n0
electron57 e-
Animated Bohr model of La (Лантан)

Хусусияти Физикӣ

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
зичӣ
6,15 g/cm³
Atomic Radii Of The Elements: Лантан0102030405060708090100110120130140150160170180190200210220230240250pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

энергия
proton affinity
1 013 kJ/mol
electron affinity
ionization energy
ionization energy of La (Лантан)
enthalpy of vaporization
402 kJ/mol
гармои гудозиш
8,5 kJ/mol
standard enthalpy of formation
431 kJ/mol
electron
Абри электронӣ2, 8, 18, 18, 9, 2
Bohr model: La (Лантан)
valence electron2
Lewis structure: La (Лантан)
electron configuration[Xe] 5d1 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 5d1 6s2
Enhanced Bohr model of La (Лантан)
Orbital Diagram of La (Лантан)
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
Ранг
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
heat capacity ratio
electrical properties
навъConductor
electrical conductivity
1,6 MS/m
electrical resistivity
0,00000061 m Ω
superconductivity
4,88 K
magnetism
навъparamagnetic
magnetic susceptibility (Mass)
0,000000011 m³/Kg
magnetic susceptibility (Molar)
0,000000001528 m³/mol
magnetic susceptibility (Volume)
0,00006761
magnetic ordering
Curie temperature
Néel temperature
сохт
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
speed of sound
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
ададҳои квантӣ2D3/2
space group194 (P63/mmc)

Isotopes of Lanthanum

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

116La

Адади массавӣ116
neutron number59
relative atomic mass
115,957005 ± 0,000345 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
таърихи кашф
parity

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

117La

Адади массавӣ117
neutron number60
relative atomic mass
116,950326 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
21,7 ± 1,8 ms
spin3/2
nuclear quadrupole moment
таърихи кашф2001
parity+

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

118La

Адади массавӣ118
neutron number61
relative atomic mass
117,946731 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1
nuclear quadrupole moment
таърихи кашф
parity-

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

119La

Адади массавӣ119
neutron number62
relative atomic mass
118,940934 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin11/2
nuclear quadrupole moment
таърихи кашф
parity-

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

120La

Адади массавӣ120
neutron number63
relative atomic mass
119,938196 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,8 ± 0,2 s
spin1
nuclear quadrupole moment
таърихи кашф1984
parity-

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

121La

Адади массавӣ121
neutron number64
relative atomic mass
120,933236 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,3 ± 0,2 s
spin11/2
nuclear quadrupole moment
таърихи кашф1988
parity-

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

122La

Адади массавӣ122
neutron number65
relative atomic mass
121,93071 ± 0,00032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
8,6 ± 0,5 s
spin1
nuclear quadrupole moment
таърихи кашф1984
parity-

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

123La

Адади массавӣ123
neutron number66
relative atomic mass
122,9263 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
17 ± 3 s
spin11/2
nuclear quadrupole moment
таърихи кашф1978
parity-

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

124La

Адади массавӣ124
neutron number67
relative atomic mass
123,924574275 ± 0,000060836 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
29,21 ± 0,17 s
spin7
nuclear quadrupole moment
таърихи кашф1978
parity

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

125La

Адади массавӣ125
neutron number68
relative atomic mass
124,920815931 ± 0,000027909 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
64,8 ± 1,2 s
spin11/2
nuclear quadrupole moment
таърихи кашф1973
parity-

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

126La

Адади массавӣ126
neutron number69
relative atomic mass
125,919512667 ± 0,000097163 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
54 ± 2 s
spin5
nuclear quadrupole moment
таърихи кашф1961
parity-

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

127La

Адади массавӣ127
neutron number70
relative atomic mass
126,916375083 ± 0,000027912 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,1 ± 0,1 m
spin11/2
nuclear quadrupole moment
таърихи кашф1963
parity-

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

128La

Адади массавӣ128
neutron number71
relative atomic mass
127,915592123 ± 0,000058452 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,18 ± 0,14 m
spin5
nuclear quadrupole moment
таърихи кашф1961
parity+

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

129La

Адади массавӣ129
neutron number72
relative atomic mass
128,912695592 ± 0,000022913 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
11,6 ± 0,2 m
spin3/2
nuclear quadrupole moment
таърихи кашф1963
parity+

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

130La

Адади массавӣ130
neutron number73
relative atomic mass
129,912369413 ± 0,000027854 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
8,7 ± 0,1 m
spin3
nuclear quadrupole moment
таърихи кашф1961
parity

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

131La

Адади массавӣ131
neutron number74
relative atomic mass
130,91007 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
59 ± 2 m
spin3/2
nuclear quadrupole moment
таърихи кашф1951
parity+

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

132La

Адади массавӣ132
neutron number75
relative atomic mass
131,910119047 ± 0,000039032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,59 ± 0,04 h
spin2
nuclear quadrupole moment
таърихи кашф1951
parity-

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

133La

Адади массавӣ133
neutron number76
relative atomic mass
132,908218 ± 0,00003 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,912 ± 0,008 h
spin5/2
nuclear quadrupole moment
таърихи кашф1950
parity+

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

134La

Адади массавӣ134
neutron number77
relative atomic mass
133,908514011 ± 0,000021395 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,45 ± 0,16 m
spin1
nuclear quadrupole moment
таърихи кашф1951
parity+

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

135La

Адади массавӣ135
neutron number78
relative atomic mass
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
таърихи кашф1948
parity+

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

136La

Адади массавӣ136
neutron number79
relative atomic mass
135,907634962 ± 0,000057081 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
9,87 ± 0,03 m
spin1
nuclear quadrupole moment
таърихи кашф1950
parity+

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

137La

Адади массавӣ137
neutron number80
relative atomic mass
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
таърихи кашф1948
parity+

decay modeintensity
ϵ (electron capture)100%

138La

Адади массавӣ138
neutron number81
relative atomic mass
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
таърихи кашф1947
parity+

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

139La

Адади массавӣ139
neutron number82
relative atomic mass
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
таърихи кашф1924
parity+

140La

Адади массавӣ140
neutron number83
relative atomic mass
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
таърихи кашф1935
parity-

decay modeintensity
β (β decay)100%

141La

Адади массавӣ141
neutron number84
relative atomic mass
140,910971155 ± 0,00000443 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,92 ± 0,03 h
spin7/2
nuclear quadrupole moment
таърихи кашф1951
parity+

decay modeintensity
β (β decay)100%

142La

Адади массавӣ142
neutron number85
relative atomic mass
141,91409076 ± 0,000006748 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
91,1 ± 0,5 m
spin2
nuclear quadrupole moment
таърихи кашф1953
parity-

decay modeintensity
β (β decay)100%

143La

Адади массавӣ143
neutron number86
relative atomic mass
142,916079482 ± 0,000007868 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
14,2 ± 0,1 m
spin7/2
nuclear quadrupole moment
таърихи кашф1951
parity

decay modeintensity
β (β decay)100%

144La

Адади массавӣ144
neutron number87
relative atomic mass
143,919645589 ± 0,000013888 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
44 ± 0,7 s
spin3
nuclear quadrupole moment
таърихи кашф1967
parity-

decay modeintensity
β (β decay)100%

145La

Адади массавӣ145
neutron number88
relative atomic mass
144,921808065 ± 0,00001317 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24,8 ± 2 s
spin5/2
nuclear quadrupole moment
таърихи кашф1974
parity+

decay modeintensity
β (β decay)100%

146La

Адади массавӣ146
neutron number89
relative atomic mass
145,925688017 ± 0,000001797 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
9,9 ± 0,1 s
spin5
nuclear quadrupole moment
таърихи кашф1970
parity-

decay modeintensity
β (β decay)100%

147La

Адади массавӣ147
neutron number90
relative atomic mass
146,9284178 ± 0,0000115 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,026 ± 0,02 s
spin5/2
nuclear quadrupole moment
таърихи кашф1979
parity+

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

148La

Адади массавӣ148
neutron number91
relative atomic mass
147,9326794 ± 0,0000209 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,414 ± 0,025 s
spin2
nuclear quadrupole moment
таърихи кашф1969
parity-

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

149La

Адади массавӣ149
neutron number92
relative atomic mass
148,935351259 ± 0,00021499 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,071 ± 0,022 s
spin3/2
nuclear quadrupole moment
таърихи кашф1979
parity-

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

150La

Адади массавӣ150
neutron number93
relative atomic mass
149,9395475 ± 0,0000027 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
504 ± 15 ms
spin3
nuclear quadrupole moment
таърихи кашф1993
parity+

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

151La

Адади массавӣ151
neutron number94
relative atomic mass
150,942769 ± 0,0004675 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
465 ± 24 ms
spin1/2
nuclear quadrupole moment
0
таърихи кашф1994
parity+

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

152La

Адади массавӣ152
neutron number95
relative atomic mass
151,947085 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
287 ± 16 ms
spin2
nuclear quadrupole moment
таърихи кашф1994
parity-

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

153La

Адади массавӣ153
neutron number96
relative atomic mass
152,950553 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
245 ± 18 ms
spin1/2
nuclear quadrupole moment
0
таърихи кашф1994
parity+

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

154La

Адади массавӣ154
neutron number97
relative atomic mass
153,955416 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
161 ± 15 ms
spin2
nuclear quadrupole moment
таърихи кашф2017
parity-

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

155La

Адади массавӣ155
neutron number98
relative atomic mass
154,95928 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
101 ± 28 ms
spin1/2
nuclear quadrupole moment
0
таърихи кашф2016
parity+

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

156La

Адади массавӣ156
neutron number99
relative atomic mass
155,964519 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
84 ± 78 ms
spin4
nuclear quadrupole moment
таърихи кашф2017
parity+

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

157La

Адади массавӣ157
neutron number100
relative atomic mass
156,968792 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin1/2
nuclear quadrupole moment
0
таърихи кашф2018
parity+

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

таърих

кошифCarl Mosander
макони кашфSweden
таърихи кашф1839
РешашиносӣGreek: lanthanein (to be hidden).
pronunciationLAN-the-nem (Англисӣ)

source

Abundance
Abundance in Earth's crust
natural abundance (Уқёнус)
0,0000034 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0,000028 %
natural abundance (Офтоб)
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