Lanthanum (La)

chemical element with symbol La and atomic number 57

Atomic Number	57
Atomic Weight	138.90547
Nombor jisim	139

Group	3
Period	6
Block	d

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

Sifat Fizikal

Jejari Atom	195 pm 284 pm
molar volume	22.5 cm³/mol
Jejari kovalen	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
Jejari van der Waals	250 pm 243 pm 278 pm 352.2 pm
ketumpatan	6.15 g/cm³ 5,940 kg/m³

Sifat Kimia

tenaga

proton affinity	1,013 kJ/mol
Pertalian elektron	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

Entalpi pengewapan	402 kJ/mol
entalpi pelakuran	8.5 kJ/mol
standard enthalpy of formation	431 kJ/mol
Elektron

Petala elektron	2, 8, 18, 18, 9, 2

Elektron valens	2 ⓘ

tatarajah elektron	[Xe] 5d¹ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 5d¹ 6s²

Keadaan pengoksidaan	0, 1, 2, 3
Keelektronegatifan	0.163142 1.1
Electrophilicity Index	0.894990101871977 eV/particle
keadaan jirim asas

fasa jirim	Solid
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 #ff1493 #70d4ff #70d4ff
rupa	silvery 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
type	Conductor
Kekonduksian elektrik	1.6 MS/m
Kerintangan dan kekonduksian elektrik	0.00000061 Ω*m
Kesuperkonduksian	4.88 K
kemagnetan
type	paramagnetic
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 Structure	Simple Hexagonal (HEX)
lattice constant	3.75 Å
Lattice Angles	π/2, π/2, 2 π/3
mechanical property
hardness	363 MPa 2.5 MPa 491 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
Category	Lanthanides, 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
Nombor kuantum	2D3/2
space group	194 (P63/mmc)

Isotopes of Lanthanum

Stable Isotopes	1
Unstable Isotopes	41
Natural Isotopes	2

¹¹⁶La

Nombor jisim	116
nombor neutron	59
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 mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
β⁺ p (β⁺-delayed proton emission)
p (proton emission)

¹¹⁷La

Nombor jisim	117
nombor neutron	60
Jisim Atom Relatif	116.950326 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	21.7 ± 1.8 ms
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	2001
parity	+

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

¹¹⁸La

Nombor jisim	118
nombor neutron	61
Jisim Atom Relatif	117.946731 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	1
nuclear quadrupole moment
tarikh penemuan
parity	-

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

¹¹⁹La

Nombor jisim	119
nombor neutron	62
Jisim Atom Relatif	118.940934 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	11/2
nuclear quadrupole moment
tarikh penemuan
parity	-

decay mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

¹²⁰La

Nombor jisim	120
nombor neutron	63
Jisim Atom Relatif	119.938196 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.8 ± 0.2 s
Spin	1
nuclear quadrupole moment
tarikh penemuan	1984
parity	-

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

¹²¹La

Nombor jisim	121
nombor neutron	64
Jisim Atom Relatif	120.933236 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.3 ± 0.2 s
Spin	11/2
nuclear quadrupole moment
tarikh penemuan	1988
parity	-

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

¹²²La

Nombor jisim	122
nombor neutron	65
Jisim Atom Relatif	121.93071 ± 0.00032 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	8.6 ± 0.5 s
Spin	1
nuclear quadrupole moment
tarikh penemuan	1984
parity	-

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

¹²³La

Nombor jisim	123
nombor neutron	66
Jisim Atom Relatif	122.9263 ± 0.00021 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	17 ± 3 s
Spin	11/2
nuclear quadrupole moment
tarikh penemuan	1978
parity	-

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

¹²⁴La

Nombor jisim	124
nombor neutron	67
Jisim Atom Relatif	123.924574275 ± 0.000060836 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	29.21 ± 0.17 s
Spin	7
nuclear quadrupole moment
tarikh penemuan	1978
parity

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

¹²⁵La

Nombor jisim	125
nombor neutron	68
Jisim Atom Relatif	124.920815931 ± 0.000027909 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	64.8 ± 1.2 s
Spin	11/2
nuclear quadrupole moment
tarikh penemuan	1973
parity	-

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

¹²⁶La

Nombor jisim	126
nombor neutron	69
Jisim Atom Relatif	125.919512667 ± 0.000097163 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	54 ± 2 s
Spin	5
nuclear quadrupole moment
tarikh penemuan	1961
parity	-

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

¹²⁷La

Nombor jisim	127
nombor neutron	70
Jisim Atom Relatif	126.916375083 ± 0.000027912 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.1 ± 0.1 m
Spin	11/2
nuclear quadrupole moment
tarikh penemuan	1963
parity	-

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

¹²⁸La

Nombor jisim	128
nombor neutron	71
Jisim Atom Relatif	127.915592123 ± 0.000058452 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.18 ± 0.14 m
Spin	5
nuclear quadrupole moment
tarikh penemuan	1961
parity	+

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

¹²⁹La

Nombor jisim	129
nombor neutron	72
Jisim Atom Relatif	128.912695592 ± 0.000022913 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	11.6 ± 0.2 m
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1963
parity	+

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

¹³⁰La

Nombor jisim	130
nombor neutron	73
Jisim Atom Relatif	129.912369413 ± 0.000027854 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	8.7 ± 0.1 m
Spin	3
nuclear quadrupole moment
tarikh penemuan	1961
parity

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

¹³¹La

Nombor jisim	131
nombor neutron	74
Jisim Atom Relatif	130.91007 ± 0.00003 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	59 ± 2 m
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1951
parity	+

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

¹³²La

Nombor jisim	132
nombor neutron	75
Jisim Atom Relatif	131.910119047 ± 0.000039032 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	4.59 ± 0.04 h
Spin	2
nuclear quadrupole moment
tarikh penemuan	1951
parity	-

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

¹³³La

Nombor jisim	133
nombor neutron	76
Jisim Atom Relatif	132.908218 ± 0.00003 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	3.912 ± 0.008 h
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1950
parity	+

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

¹³⁴La

Nombor jisim	134
nombor neutron	77
Jisim Atom Relatif	133.908514011 ± 0.000021395 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	6.45 ± 0.16 m
Spin	1
nuclear quadrupole moment
tarikh penemuan	1951
parity	+

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

¹³⁵La

Nombor jisim	135
nombor neutron	78
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
Spin	5/2
nuclear quadrupole moment	-0.4 ± 0.4
tarikh penemuan	1948
parity	+

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

¹³⁶La

Nombor jisim	136
nombor neutron	79
Jisim Atom Relatif	135.907634962 ± 0.000057081 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9.87 ± 0.03 m
Spin	1
nuclear quadrupole moment
tarikh penemuan	1950
parity	+

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

¹³⁷La

Nombor jisim	137
nombor neutron	80
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
Spin	7/2
nuclear quadrupole moment	0.21 ± 0.04
tarikh penemuan	1948
parity	+

decay mode	Keamatan (fizik)
ϵ (electron capture)	100%

¹³⁸La

Nombor jisim	138
nombor neutron	81
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
Spin	5
nuclear quadrupole moment	0.39 ± 0.03
tarikh penemuan	1947
parity	+

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

¹³⁹La

Nombor jisim	139
nombor neutron	82
Jisim Atom Relatif	138.906362927 ± 0.000000651 Da
g-factor	0.79402857142857 ± 0.000057142857142857
natural abundance	99.91119 ± 0.00071
Reputan radioaktif	Isotop stabil
setengah hayat	Not Radioactive ☢️
Spin	7/2
nuclear quadrupole moment	0.206 ± 0.004
tarikh penemuan	1924
parity	+

¹⁴⁰La

Nombor jisim	140
nombor neutron	83
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
Spin	3
nuclear quadrupole moment	0.087 ± 0.013
tarikh penemuan	1935
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴¹La

Nombor jisim	141
nombor neutron	84
Jisim Atom Relatif	140.910971155 ± 0.00000443 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	3.92 ± 0.03 h
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1951
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴²La

Nombor jisim	142
nombor neutron	85
Jisim Atom Relatif	141.91409076 ± 0.000006748 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	91.1 ± 0.5 m
Spin	2
nuclear quadrupole moment
tarikh penemuan	1953
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴³La

Nombor jisim	143
nombor neutron	86
Jisim Atom Relatif	142.916079482 ± 0.000007868 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	14.2 ± 0.1 m
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1951
parity

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴⁴La

Nombor jisim	144
nombor neutron	87
Jisim Atom Relatif	143.919645589 ± 0.000013888 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	44 ± 0.7 s
Spin	3
nuclear quadrupole moment
tarikh penemuan	1967
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴⁵La

Nombor jisim	145
nombor neutron	88
Jisim Atom Relatif	144.921808065 ± 0.00001317 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	24.8 ± 2 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1974
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴⁶La

Nombor jisim	146
nombor neutron	89
Jisim Atom Relatif	145.925688017 ± 0.000001797 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9.9 ± 0.1 s
Spin	5
nuclear quadrupole moment
tarikh penemuan	1970
parity	-

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)	100%

¹⁴⁷La

Nombor jisim	147
nombor neutron	90
Jisim Atom Relatif	146.9284178 ± 0.0000115 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	4.026 ± 0.02 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1979
parity	+

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

¹⁴⁸La

Nombor jisim	148
nombor neutron	91
Jisim Atom Relatif	147.9326794 ± 0.0000209 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.414 ± 0.025 s
Spin	2
nuclear quadrupole moment
tarikh penemuan	1969
parity	-

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

¹⁴⁹La

Nombor jisim	149
nombor neutron	92
Jisim Atom Relatif	148.935351259 ± 0.00021499 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.071 ± 0.022 s
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1979
parity	-

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

¹⁵⁰La

Nombor jisim	150
nombor neutron	93
Jisim Atom Relatif	149.9395475 ± 0.0000027 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	504 ± 15 ms
Spin	3
nuclear quadrupole moment
tarikh penemuan	1993
parity	+

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

¹⁵¹La

Nombor jisim	151
nombor neutron	94
Jisim Atom Relatif	150.942769 ± 0.0004675 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	465 ± 24 ms
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1994
parity	+

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

¹⁵²La

Nombor jisim	152
nombor neutron	95
Jisim Atom Relatif	151.947085 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	287 ± 16 ms
Spin	2
nuclear quadrupole moment
tarikh penemuan	1994
parity	-

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

¹⁵³La

Nombor jisim	153
nombor neutron	96
Jisim Atom Relatif	152.950553 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	245 ± 18 ms
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	1994
parity	+

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

¹⁵⁴La

Nombor jisim	154
nombor neutron	97
Jisim Atom Relatif	153.955416 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	161 ± 15 ms
Spin	2
nuclear quadrupole moment
tarikh penemuan	2017
parity	-

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

¹⁵⁵La

Nombor jisim	155
nombor neutron	98
Jisim Atom Relatif	154.95928 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	101 ± 28 ms
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	2016
parity	+

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

¹⁵⁶La

Nombor jisim	156
nombor neutron	99
Jisim Atom Relatif	155.964519 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	84 ± 78 ms
Spin	4
nuclear quadrupole moment
tarikh penemuan	2017
parity	+

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

¹⁵⁷La

Nombor jisim	157
nombor neutron	100
Jisim Atom Relatif	156.968792 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	1/2
nuclear quadrupole moment	0
tarikh penemuan	2018
parity	+

decay mode	Keamatan (fizik)
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

sejarah

penemu atau pereka	Carl Mosander
tempat penemuan	Sweden
tarikh penemuan	1839
Etimologi	Greek: lanthanein (to be hidden).
sebutan	LAN-the-nem (Inggeris)

sumber

Abundance
Abundance in Earth's crust	39 mg/kg
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

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

Lanthanum on ChemicalAid

ChEBI ID	33336
ChemSpider ID	22369
DSSTOX compound identifier	DTXCID8047638
ECHA Substance Infocard ID	100.028.272
Human Metabolome Database ID	HMDB0013711
ID BnF	14500646j
ID CAB	195416
ID Den Store Danske	lanthan
ID Encyclopædia Universalis	lanthane-et-lanthanides
ID Ensiklopedia Besar Rusia dalam talian	2132557
ID Ensiklopedia Britannica Dalam Talian	science/lanthanum
ID Freebase	/m/025rz_s
ID GND	4034557-9
ID Gran Enciclopèdia Catalana	0118857
ID J9U Perpustakaan Negara Israel	987007555503905171
ID KBpedia	Lanthanum
ID NKCR AUT	ph543048
ID Namuwiki	란타넘
ID PSH	5758
ID Perbendaharaan Kata Pendidikan Australia	scot/3535
ID Store norske leksikon	lantan
ID Tesaurus BNCF	26399
ID Treccani	lantanio
ID Vikidia Perancis	Lanthane
ID WordNet 3.1 Synset	14667296-n
ID bahan DSSTox	DTXSID0064676
ID kewibawaan Perpustakaan Kongres	sh85074635
ID pemerihal MeSH	D007811
ID topik Quora	Lanthanum
InChI	InChI=1S/La
InChIKey	FZLIPJUXYLNCLC-UHFFFAOYSA-N
Maksud Tertakrif OmegaWiki	160966
NALT ID	49212
NDF-RT ID	N0000022394
OpenAlex ID	C555894677
PubChem CID	23926
RxNorm ID	1311070
Römpp online ID	RD-12-00388
UMLS CUI	C0023031
UNII	6I3K30563S
USGS Thesaurus ID	1490
ZVG number	7570
nombor pendaftaran CAS	7439-91-0

Lanthanum (La)

Sifat Fizikal

Sifat Kimia

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

sejarah

sumber

Nuclear Screening Constants

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