Lantanum (La)

chemical element with symbol La and atomic number 57

Atomic Number	57
Atomic Weight	138.90547
mass number	139

Group	3
Period	6
Block	d

proton	57 p⁺
neutron	82 n⁰
electron	57 e^-

Physical Property

Atomic Radius	195 pm 284 pm
molar volume	22.5 cm³/mol
covalent radius	180 pm 139 pm 139 pm 207 pm
Metallic Radius	169 pm 187 pm
ionic radius	103.2 pm 110 pm 116 pm 121.6 pm 127 pm 136 pm
Crystal Radius	117.2 pm 124 pm 130 pm 135.6 pm 141 pm 150 pm
Van der Waals radius	250 pm 243 pm 278 pm 352.2 pm
density	6.15 g/cm³ 5,940 kg/m³

Chemical Property

{ERROR}

bree

proton affinity	1,013 kJ/mol
electron affinity	0.47 eV/particle
ionization energy	5.5769 eV/particle 11.18492 eV/particle 19.1773 eV/particle 49.95 eV/particle 61.6 eV/particle 74 eV/particle 88 eV/particle 105 eV/particle 119 eV/particle 151.42 eV/particle 168.77 eV/particle 275 eV/particle 303 eV/particle 332 eV/particle 364 eV/particle 393 eV/particle 431 eV/particle 464 eV/particle 498 eV/particle 533 eV/particle 566 eV/particle 696 eV/particle 731 eV/particle 770 eV/particle 806 eV/particle 865 eV/particle 906 eV/particle 995 eV/particle 1,039.09 eV/particle 1,800 eV/particle 1,884 eV/particle 1,974 eV/particle 2,069 eV/particle 2,162 eV/particle 2,259 eV/particle 2,377 eV/particle 2,473 eV/particle 2,577 eV/particle 2,674 eV/particle 2,950 eV/particle 3,036 eV/particle 3,133 eV/particle 3,222 eV/particle 3,416 eV/particle 3,515 eV/particle 3,704 eV/particle 3,800 eV/particle 8,669 eV/particle 8,914 eV/particle 9,184 eV/particle 9,437 eV/particle 10,136 eV/particle 10,426 eV/particle 10,789 eV/particle 11,033.4 eV/particle 45,144.994 eV/particle 46,245.6 eV/particle

enthalpy of vaporization	402 kJ/mol
enthalpy of fusion	8.5 kJ/mol
standard enthalpy of formation	431 kJ/mol
electron

electron shell	2, 8, 18, 18, 9, 2

valence electron	2 ⓘ

electron configuration	[Xe] 5d¹ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 5d¹ 6s²

oxidation number	0, 1, 2, 3
electronegativity	0.163142 1.1
Electrophilicity Index	0.894990101871977 eV/particle
fundamental state of matter

phase of matter
gaseous state of matter
Boiling Point	3,737.15 K
Melting Point	1,193.15 K
critical pressure
critical temperature
triple point
appearance
color	Black #ff1493 #70d4ff #70d4ff
appearance	silvery 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
type	Conductor
electrical conductivity	1.6 MS/m
electrical resistivity	0.00000061 Ω*m
superconductivity	4.88 K
magnetism
type	paramagnetic
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
structure
Crystal Structure	{ERROR}
lattice constant	3.75 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	363 MPa 2.5 MPa 491 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
Category	Actinides, Lanthanides
CAS Group	IIIA
IUPAC Group	IIIB
Glawe Number	32
Mendeleev Number	13
Pettifor Number	33
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

other

Gas Basicity	991.9 kJ/mol
polarizability	215 ± 20 a₀
C6 Dispersion Coefficient	3,730 a₀
allotrope
Neutron cross section	8.98
Neutron Mass Absorption	0.0023
quantum number	2D3/2
space group	194 (P63/mmc)

Isotopes of Lanthanum

Stable Isotopes	1
Unstable Isotopes	41
Natural Isotopes	2

¹¹⁶La

mass number	116
neutron number	59
Trimmid Breneenagh	115.957005 ± 0.000345 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

¹¹⁷La

mass number	117
neutron number	60
Trimmid Breneenagh	116.950326 ± 0.000215 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	21.7 ± 1.8 ms
spin	3/2
nuclear quadrupole moment
time of discovery or invention	2001
parity	+

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

¹¹⁸La

mass number	118
neutron number	61
Trimmid Breneenagh	117.946731 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life
spin	1
nuclear quadrupole moment
time of discovery or invention
parity	-

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

¹¹⁹La

mass number	119
neutron number	62
Trimmid Breneenagh	118.940934 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life
spin	11/2
nuclear quadrupole moment
time of discovery or invention
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

¹²⁰La

mass number	120
neutron number	63
Trimmid Breneenagh	119.938196 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	2.8 ± 0.2 s
spin	1
nuclear quadrupole moment
time of discovery or invention	1984
parity	-

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

¹²¹La

mass number	121
neutron number	64
Trimmid Breneenagh	120.933236 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	5.3 ± 0.2 s
spin	11/2
nuclear quadrupole moment
time of discovery or invention	1988
parity	-

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

¹²²La

mass number	122
neutron number	65
Trimmid Breneenagh	121.93071 ± 0.00032 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	8.6 ± 0.5 s
spin	1
nuclear quadrupole moment
time of discovery or invention	1984
parity	-

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

¹²³La

mass number	123
neutron number	66
Trimmid Breneenagh	122.9263 ± 0.00021 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	17 ± 3 s
spin	11/2
nuclear quadrupole moment
time of discovery or invention	1978
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁴La

mass number	124
neutron number	67
Trimmid Breneenagh	123.924574275 ± 0.000060836 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	29.21 ± 0.17 s
spin	7
nuclear quadrupole moment
time of discovery or invention	1978
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁵La

mass number	125
neutron number	68
Trimmid Breneenagh	124.920815931 ± 0.000027909 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	64.8 ± 1.2 s
spin	11/2
nuclear quadrupole moment
time of discovery or invention	1973
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁶La

mass number	126
neutron number	69
Trimmid Breneenagh	125.919512667 ± 0.000097163 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	54 ± 2 s
spin	5
nuclear quadrupole moment
time of discovery or invention	1961
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁷La

mass number	127
neutron number	70
Trimmid Breneenagh	126.916375083 ± 0.000027912 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	5.1 ± 0.1 m
spin	11/2
nuclear quadrupole moment
time of discovery or invention	1963
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁸La

mass number	128
neutron number	71
Trimmid Breneenagh	127.915592123 ± 0.000058452 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	5.18 ± 0.14 m
spin	5
nuclear quadrupole moment
time of discovery or invention	1961
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹²⁹La

mass number	129
neutron number	72
Trimmid Breneenagh	128.912695592 ± 0.000022913 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	11.6 ± 0.2 m
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1963
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁰La

mass number	130
neutron number	73
Trimmid Breneenagh	129.912369413 ± 0.000027854 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	8.7 ± 0.1 m
spin	3
nuclear quadrupole moment
time of discovery or invention	1961
parity

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³¹La

mass number	131
neutron number	74
Trimmid Breneenagh	130.91007 ± 0.00003 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	59 ± 2 m
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³²La

mass number	132
neutron number	75
Trimmid Breneenagh	131.910119047 ± 0.000039032 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	4.59 ± 0.04 h
spin	2
nuclear quadrupole moment
time of discovery or invention	1951
parity	-

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³³La

mass number	133
neutron number	76
Trimmid Breneenagh	132.908218 ± 0.00003 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	3.912 ± 0.008 h
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1950
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁴La

mass number	134
neutron number	77
Trimmid Breneenagh	133.908514011 ± 0.000021395 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	6.45 ± 0.16 m
spin	1
nuclear quadrupole moment
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁵La

mass number	135
neutron number	78
Trimmid Breneenagh	134.906984427 ± 0.000010126 Da
g-factor	1.48 ± 0.036
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	18.91 ± 0.02 h
spin	5/2
nuclear quadrupole moment	-0.4 ± 0.4
time of discovery or invention	1948
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁶La

mass number	136
neutron number	79
Trimmid Breneenagh	135.907634962 ± 0.000057081 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	9.87 ± 0.03 m
spin	1
nuclear quadrupole moment
time of discovery or invention	1950
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%

¹³⁷La

mass number	137
neutron number	80
Trimmid Breneenagh	136.906450438 ± 0.00000176 Da
g-factor	0.77028571428571 ± 0.0017142857142857
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	60 ± 20 ky
spin	7/2
nuclear quadrupole moment	0.21 ± 0.04
time of discovery or invention	1948
parity	+

decay mode	intensity
ϵ (electron capture)	100%

¹³⁸La

mass number	138
neutron number	81
Trimmid Breneenagh	137.907124041 ± 0.000000446 Da
g-factor	0.74168 ± 0.00004
natural abundance	0.08881 ± 0.00071
goul-roorid	☢️ bunstoo goul-rooragh
half-life	103 ± 1 Gy
spin	5
nuclear quadrupole moment	0.39 ± 0.03
time of discovery or invention	1947
parity	+

decay mode	intensity
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	65.5%
β⁻ (β⁻ decay)	34.5%

¹³⁹La

mass number	139
neutron number	82
Trimmid Breneenagh	138.906362927 ± 0.000000651 Da
g-factor	0.79402857142857 ± 0.000057142857142857
natural abundance	99.91119 ± 0.00071
goul-roorid	stable isotope
half-life	Not Radioactive ☢️
spin	7/2
nuclear quadrupole moment	0.206 ± 0.004
time of discovery or invention	1924
parity	+

¹⁴⁰La

mass number	140
neutron number	83
Trimmid Breneenagh	139.909487285 ± 0.000000651 Da
g-factor	0.24333333333333 ± 0.005
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	40.289 ± 0.004 h
spin	3
nuclear quadrupole moment	0.087 ± 0.013
time of discovery or invention	1935
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴¹La

mass number	141
neutron number	84
Trimmid Breneenagh	140.910971155 ± 0.00000443 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	3.92 ± 0.03 h
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1951
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴²La

mass number	142
neutron number	85
Trimmid Breneenagh	141.91409076 ± 0.000006748 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	91.1 ± 0.5 m
spin	2
nuclear quadrupole moment
time of discovery or invention	1953
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴³La

mass number	143
neutron number	86
Trimmid Breneenagh	142.916079482 ± 0.000007868 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	14.2 ± 0.1 m
spin	7/2
nuclear quadrupole moment
time of discovery or invention	1951
parity

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁴La

mass number	144
neutron number	87
Trimmid Breneenagh	143.919645589 ± 0.000013888 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	44 ± 0.7 s
spin	3
nuclear quadrupole moment
time of discovery or invention	1967
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁵La

mass number	145
neutron number	88
Trimmid Breneenagh	144.921808065 ± 0.00001317 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	24.8 ± 2 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1974
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁶La

mass number	146
neutron number	89
Trimmid Breneenagh	145.925688017 ± 0.000001797 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	9.9 ± 0.1 s
spin	5
nuclear quadrupole moment
time of discovery or invention	1970
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%

¹⁴⁷La

mass number	147
neutron number	90
Trimmid Breneenagh	146.9284178 ± 0.0000115 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	4.026 ± 0.02 s
spin	5/2
nuclear quadrupole moment
time of discovery or invention	1979
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.041%

¹⁴⁸La

mass number	148
neutron number	91
Trimmid Breneenagh	147.9326794 ± 0.0000209 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	1.414 ± 0.025 s
spin	2
nuclear quadrupole moment
time of discovery or invention	1969
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	0.18%

¹⁴⁹La

mass number	149
neutron number	92
Trimmid Breneenagh	148.935351259 ± 0.00021499 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	1.071 ± 0.022 s
spin	3/2
nuclear quadrupole moment
time of discovery or invention	1979
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	1.43%

¹⁵⁰La

mass number	150
neutron number	93
Trimmid Breneenagh	149.9395475 ± 0.0000027 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	504 ± 15 ms
spin	3
nuclear quadrupole moment
time of discovery or invention	1993
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)	2.7%

¹⁵¹La

mass number	151
neutron number	94
Trimmid Breneenagh	150.942769 ± 0.0004675 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	465 ± 24 ms
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	1994
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁵²La

mass number	152
neutron number	95
Trimmid Breneenagh	151.947085 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	287 ± 16 ms
spin	2
nuclear quadrupole moment
time of discovery or invention	1994
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁵³La

mass number	153
neutron number	96
Trimmid Breneenagh	152.950553 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	245 ± 18 ms
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	1994
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

¹⁵⁴La

mass number	154
neutron number	97
Trimmid Breneenagh	153.955416 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	161 ± 15 ms
spin	2
nuclear quadrupole moment
time of discovery or invention	2017
parity	-

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

¹⁵⁵La

mass number	155
neutron number	98
Trimmid Breneenagh	154.95928 ± 0.000429 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	101 ± 28 ms
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	2016
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)
2n (2-neutron emission)

¹⁵⁶La

mass number	156
neutron number	99
Trimmid Breneenagh	155.964519 ± 0.000429 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life	84 ± 78 ms
spin	4
nuclear quadrupole moment
time of discovery or invention	2017
parity	+

decay mode	intensity
β⁻ (β⁻ decay)	100%
β⁻ n (β⁻-delayed neutron emission)

¹⁵⁷La

mass number	157
neutron number	100
Trimmid Breneenagh	156.968792 ± 0.000322 Da
g-factor
natural abundance
goul-roorid	☢️ bunstoo goul-rooragh
half-life
spin	1/2
nuclear quadrupole moment	0
time of discovery or invention	2018
parity	+

decay mode	intensity
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

shennaghys

discoverer or inventor	Carl Mosander
location of discovery	Sweden
time of discovery or invention	1839
Bun-ocklaght	Greek: lanthanein (to be hidden).
pronunciation	LAN-the-nem (en)

source

Abundance
Abundance in Earth's crust	39 mg/kg
natural abundance (ocean)	0.0000034 mg/L
natural abundance (human body)
natural abundance (meteoroid)	0.000028 %
natural abundance (Yn Ghrian)	0.0000002 %
Abundance in Universe	0.0000002 %

Nuclear Screening Constants

1	s	1.1317
2	p	4.2044
2	s	15.0466
3	d	13.9398
3	p	18.8604
3	s	19.0569
4	d	32.2748
4	f	55.64
4	p	29.2936
4	s	28.2036
5	p	41.104
5	s	39.189
6	s	47.688

Lantanum on ChemicalAid

Lantanum (La)

Physical Property

Chemical Property

other

Isotopes of Lanthanum

116La

117La

118La

119La

120La

121La

122La

123La

124La

125La

126La

127La

128La

129La

130La

131La

132La

133La

134La

135La

136La

137La

138La

139La

140La

141La

142La

143La

144La

145La

146La

147La

148La

149La

150La

151La

152La

153La

154La

155La

156La

157La

shennaghys

source

Nuclear Screening Constants

¹¹⁶La

¹¹⁷La

¹¹⁸La

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