57 – Lanthanum, La

PERIODIC TABLE

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Elemental Tile
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Lanthanum
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Lanthanum is a soft, ductile, silvery-white metallic chemical element, it almost always assumes the oxidation state +3. Lanthanum has no biological role and is not very toxic.

1839 by Carl Gustaf Mosander, Sweden.

DISCOVERY

Ancient Greek, λανθάνω (lanthánō, 'escape notice'), gone long undetected in mineral ores.

ETYMOLOGY

Lanthanum

Element

La

Symbol

57 Atomic Number

Lanthanide

Classification

7439-91-0

CAS Number

Silver

Elemental Colour

-

Refractive Index

0.280 Poisson Ratio

22.601 cm³

Molar Volume

363.00M Pa, 3.582'5k Atm

3.582'5k Atm

Brinell Hardness

2.50 Mohs Hardness

491.00M Pa, 4.845'8k Atm

4.845'8k Atm

Vickers Hardness

2,475 m/s, Mach 7.215'7

2,475 m/s

Speed of Sound

28.00G Pa, 276.338'5k Atm

276.338'5k Atm

Bulk Modulus

14.00G Pa, 138.169'3k Atm

138.169'3k Atm

Shear Modulus

37.00G Pa, 365.161'6k Atm

365.161'6k Atm

Young Modulus

Allotropes

1,193.15 K, 920.00 °C

920.00 °C

Melting Point

3,737.15 K, 3,464.00 °C

3,464.00 °C

Boiling Point

-

Automatic Ignition

-

Flashpoint

-

Critical Temperature

-

Critical Pressure

13.000'000 W/(m K)

Thermal Conductivity

0.000'012'1 K^-1

Thermal Expansion

195.00 J/(kg K)

Specific Heat

6.200 kJ/mol

Heat Fusion

400.000 kJ/mol

Heat Vaporisation

-

Heat Combustion

-

Curie Point

-

Neel Point

-

Adiabatic Index

Solid

Phase

Conductor

Electrical Type

1.60M S/m

Conductivity

610.00n Ω.m

Resistivity

4.880 K

Superconducting Point

-

Magnetic Type

0.000'000'011'0

Mass Susceptibility

0.000'000'001'528'00

Molar Susceptibility

0.000'067'610'00

Volume Susceptibility

Material Composition

0.000'000 %

Universe

0.000'028 %

Meteorites

0.000'000'2 %

Sun

0.004 %

Earth Crust

0.000'000'000'34 %

Oceans

-

Humans

138.905'453'9

Atomic Weight

188 pm

Atomic Radius

180 pm

Covalent Radius Single Bond

139 pm

Covalent Radius Double Bond

139 pm

Covalent Radius Triple Bond

240 pm

Van der Waals Radius

[Xe]6s²5d¹

Electron Configuration

Hexagonal, Close Packed Double

Crystal Structure

6.146'00 g/cm³

Density as Solid

5.940'00 g/cm³

Density as Liquid

-

Density as Gas

P6₃/mmc

Space Group Name

194 Space Group Number

π/2, π/2 & 2π/3

Lattice Angles

377.2, 377.2 & 1214.4 pm

Lattice Constants

3 Valence

1.1 Electronegativity

45.35 kJ/mol

Electron Affinity

Ionisation Energy

Stable

Half Life

Stable

Lifetime

5d¹ = 5, 2, -2, +1/2

Quantum Numbers

9.660'00 b σ_s

Neutron Cross Section

8.970'00 b σ_a

Neutron Mass Absorption

Stable Isotopes

Unstable Isotopes

Isotopes Overview

Isotope	Stability	Symbol	Type	Protons		Neutrons		Spin	Parity	Mass		Abundance		Mass Measure	Mass Excess		Binding Energy		Dipole Moment		Quadrupole Moment		Halflife in Years		Halflife in Seconds		A01 Decay Probability		A01 Decay Mode	A01 Decay Energy		A01 Decay Daughter	A01 Decay Link	A02 Decay Mode	A02 Decay Energy		A02 Decay Daughter	A02 Decay Link	Y01 Decay Product Yield		Y01 Decay Product Nuclide	Y02 Decay Product Yield		Y02 Decay Product Nuclide	Y03 Decay Product Yield		Y03 Decay Product Nuclide	Y04 Decay Product Yield		Y04 Decay Product Nuclide	Y05 Decay Product Yield		Y05 Decay Product Nuclide	Y06 Decay Product Yield		Y06 Decay Product Nuclide	Y07 Decay Product Yield		Y07 Decay Product Nuclide	Y08 Decay Product Yield		Y08 Decay Product Nuclide
Isotope_057_la_117_u	Unstable	¹¹⁷La	Boson	57	p	60	n	?	0	116.950'068'000'0	u	~ 0	%	~ 0	-46.512'000'000'0	MeV	8.088'000'000'0	MeV	-		-		7.45E-10	year	23.500	milli-seconds ( x⁻³ )	94.000'000	%	p	803.500	keV	¹¹⁶Ba	¹¹⁷La > [ 94 % , p , 803.5 keV ] > ¹¹⁶Ba	β+	9,754.000	keV	¹¹⁷Ba	¹¹⁷La > [ , β+ , 9,754.0 keV ] > ¹¹⁷Ba	91.960'151	%	¹¹⁶Sn	5.220'000	%	¹¹⁷Sn	3.075'304	%	¹¹⁵Sn	0.009'588	%	¹¹⁴Sn	0.001'440	%	¹¹³In	0.000'008	%	¹¹¹Cd	0.000'000	%	¹⁰⁹Ag	?	%	¹¹²Cd
Isotope_057_la_118_u	Unstable	¹¹⁸La	Fermion	57	p	61	n	?	0	117.946'730'000'0	u	~ 0	%	~ 0	-49.621'000'000'0	MeV	8.114'000'000'0	MeV	-		-		6.34E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β+	11,730.000	keV	¹¹⁸Ba	¹¹⁸La > [ ? % , β+ , 11,730.0 keV ] > ¹¹⁸Ba						?	%	¹¹⁸Sn	?	%	¹¹⁷Sn	?	%	¹¹⁶Sn	?	%	¹¹⁴Sn
Isotope_057_la_119_u	Unstable	¹¹⁹La	Boson	57	p	62	n	11/2	-1	118.940'990'000'0	u	~ 0	%	~ 0	-54.967'000'000'0	MeV	8.158'000'000'0	MeV	-		-		3.17E-8	year	1,000.000	milliseconds ( x⁻³ )	?	%	β+	8,601.000	keV	¹¹⁹Ba	¹¹⁹La > [ ? % , β+ , 8,601.0 keV ] > ¹¹⁹Ba						?	%	¹¹⁹Sn	?	%	¹¹⁸Sn	?	%	¹¹⁵Sn
Isotope_057_la_120_u	Unstable	¹²⁰La	Fermion	57	p	63	n	?	0	119.938'070'000'0	u	~ 0	%	~ 0	-57.687'000'000'0	MeV	8.180'000'000'0	MeV	-		-		8.87E-8	year	2.800	seconds ( x⁰ )	100.000'000	%	β+	10,179.000	keV	¹²⁰Ba	¹²⁰La > [ 100 % , β+ , 10,179.0 keV ] > ¹²⁰Ba	β+p	?	keV	¹¹⁶Cs	¹²⁰La > [ , β+p , ? keV ] > ¹¹⁶Cs	0.000'020	%	¹¹⁹Sn	0.000'007	%	¹¹⁹Sn	?	%	¹¹⁵Sn	?	%	¹²⁰Sn
Isotope_057_la_121_u	Unstable	¹²¹La	Boson	57	p	64	n	11/2	-1	120.933'010'000'0	u	~ 0	%	~ 0	-62.401'000'000'0	MeV	8.218'000'000'0	MeV	-		-		1.68E-7	year	5.300	seconds ( x⁰ )	100.000'000	%	β+	7,320.000	keV	¹²¹Ba	¹²¹La > [ 100 % , β+ , 7,320.0 keV ] > ¹²¹Ba	β+p	?	keV	¹²⁰Cs	¹²¹La > [ , β+p , ? keV ] > ¹²⁰Cs	100.000'000	%	¹²¹Sb	?	%	¹¹⁹Sn	?	%	¹¹⁵Sn	?	%	¹²⁰Sn
Isotope_057_la_122_u	Unstable	¹²²La	Fermion	57	p	65	n	?	0	121.930'710'000'0	u	~ 0	%	~ 0	-64.543'000'000'0	MeV	8.235'000'000'0	MeV	-		-		2.76E-7	year	8.700	seconds ( x⁰ )	100.000'000	%	β+	9,044.000	keV	¹²²Ba	¹²²La > [ 100 % , β+ , 9,044.0 keV ] > ¹²²Ba	β+p	?	keV	¹²¹Cs	¹²²La > [ , β+p , ? keV ] > ¹²¹Cs	100.000'000	%	¹²²Te	0.000'000	%	¹¹⁸Sn	?	%	¹²¹Sb
Isotope_057_la_123_u	Unstable	¹²³La	Boson	57	p	66	n	11/2	-1	122.926'240'000'0	u	~ 0	%	~ 0	-68.707'000'000'0	MeV	8.267'000'000'0	MeV	-		-		5.39E-7	year	17.000	seconds ( x⁰ )	100.000'000	%	β+	5,926.000	keV	¹²³Ba	¹²³La > [ 100 % , β+ , 5,926.0 keV ] > ¹²³Ba						100.000'000	%	¹²³Sb
Isotope_057_la_124_u	Unstable	¹²⁴La	Fermion	57	p	67	n	?	0	123.924'574'275'0	u	~ 0	%	~ 0	-70.258'610'000'0	MeV	8.278'292'000'0	MeV	-		-		9.26E-7	year	29.210	seconds ( x⁰ )	100.000'000	%	β+	7,809.000	keV	¹²⁴Ba	¹²⁴La > [ 100 % , β+ , 7,809.0 keV ] > ¹²⁴Ba						?	%	¹²⁴Te
Isotope_057_la_125_u	Unstable	¹²⁵La	Boson	57	p	68	n	11/2	-1	124.920'816'034'0	u	~ 0	%	~ 0	-73.759'389'000'0	MeV	8.304'642'000'0	MeV	-		-		2.05E-6	year	64.800	seconds ( x⁰ )	100.000'000	%	β+	4,866.400	keV	¹²⁵Ba	¹²⁵La > [ 100 % , β+ , 4,866.4 keV ] > ¹²⁵Ba						100.000'000	%	¹²⁵Te
Isotope_057_la_126_u	Unstable	¹²⁶La	Fermion	57	p	69	n	5	1	125.919'512'667'0	u	~ 0	%	~ 0	-74.973'468'000'0	MeV	8.312'426'000'0	MeV	-		-		1.71E-6	year	54.000	seconds ( x⁰ )	100.000'000	%	β+	6,674.300	keV	¹²⁶Ba	¹²⁶La > [ 100 % , β+ , 6,674.3 keV ] > ¹²⁶Ba						?	%	¹²⁶Te
Isotope_057_la_127_u	Unstable	¹²⁷La	Boson	57	p	70	n	11/2	-1	126.916'375'448'0	u	~ 0	%	~ 0	-77.895'769'000'0	MeV	8.333'538'000'0	MeV	-		-		9.82E-6	year	310.020	seconds ( x⁰ )	100.000'000	%	β+	3,897.600	keV	¹²⁷Ba	¹²⁷La > [ 100 % , β+ , 3,897.6 keV ] > ¹²⁷Ba						100.000'000	%	¹²⁷I
Isotope_057_la_128_u	Unstable	¹²⁸La	Fermion	57	p	71	n	5	1	127.915'585'177'0	u	~ 0	%	~ 0	-78.631'901'000'0	MeV	33,724.000'000'000'0	MeV	-		-		9.85E-6	year	310.980	seconds ( x⁰ )	100.000'000	%	β+	5,747.400	keV	¹²⁸Ba	¹²⁸La > [ 100 % , β+ , 5,747.4 keV ] > ¹²⁸Ba						100.000'000	%	¹²⁸Xe
Isotope_057_la_129_u	Unstable	¹²⁹La	Boson	57	p	72	n	3/2	1	128.912'692'815'0	u	~ 0	%	~ 0	-81.326'120'000'0	MeV	8.356'064'000'0	MeV	-		-		2.21E-5	year	696.000	seconds ( x⁰ )	100.000'000	%	β+	2,716.200	keV	¹²⁹Ba	¹²⁹La > [ 100 % , β+ , 2,716.2 keV ] > ¹²⁹Ba						100.000'000	%	¹²⁹Xe
Isotope_057_la_130_u	Unstable	¹³⁰La	Fermion	57	p	73	n	3	1	129.912'368'724'0	u	~ 0	%	~ 0	-81.628'008'000'0	MeV	8.356'196'000'0	MeV	-		-		1.65E-5	year	520.020	seconds ( x⁰ )	100.000'000	%	β+	4,611.400	keV	¹³⁰Ba	¹³⁰La > [ 100 % , β+ , 4,611.4 keV ] > ¹³⁰Ba						?	%	¹³⁰Xe
Isotope_057_la_131_u	Unstable	¹³¹La	Boson	57	p	74	n	3/2	1	130.910'070'000'0	u	~ 0	%	~ 0	-83.769'256'000'0	MeV	8.370'367'000'0	MeV	-		-		1.11E-5	year	349.920	seconds ( x⁰ )	100.000'000	%	β+	1,892.300	keV	¹³¹Ba	¹³¹La > [ 100 % , β+ , 1,892.3 keV ] > ¹³¹Ba						?	%	¹³¹Xe
Isotope_057_la_132_u	Unstable	¹³²La	Fermion	57	p	75	n	2	-1	131.910'101'145'0	u	~ 0	%	~ 0	-83.740'245'000'0	MeV	8.367'881'000'0	MeV	-		-		5.38E-4	year	16.992	kilo-seconds ( x³ )	100.000'000	%	β+	3,672.400	keV	¹³²Ba	¹³²La > [ 100 % , β+ , 3,672.4 keV ] > ¹³²Ba						?	%	¹³²Xe
Isotope_057_la_133_u	Unstable	¹³³La	Boson	57	p	76	n	5/2	1	132.908'218'000'0	u	~ 0	%	~ 0	-85.494'383'000'0	MeV	8.378'841'000'0	MeV	-		-		4.46E-4	year	14.080	kilo-seconds ( x³ )	100.000'000	%	β+	1,036.900	keV	¹³³Ba	¹³³La > [ 100 % , β+ , 1,036.9 keV ] > ¹³³Ba						100.000'000	%	¹³³Cs
Isotope_057_la_134_u	Unstable	¹³⁴La	Fermion	57	p	77	n	1	1	133.908'514'011'0	u	~ 0	%	~ 0	-85.218'650'000'0	MeV	8.374'488'000'0	MeV	-		-		1.23E-5	year	387.000	seconds ( x⁰ )	100.000'000	%	β+	2,790.000	keV	¹³⁴Ba	¹³⁴La > [ 100 % , β+ , 2,790.0 keV ] > ¹³⁴Ba						100.000'000	%	¹³⁴Ba
Isotope_057_la_135_u	Unstable	¹³⁵La	Boson	57	p	78	n	5/2	1	134.906'976'844'0	u	~ 0	%	~ 0	-86.650'512'000'0	MeV	8.382'849'000'0	MeV	-		-		2.22E-3	year	70.200	kilo-seconds ( x³ )	100.000'000	%	β+	177.800	keV	¹³⁵Ba	¹³⁵La > [ 100 % , β+ , 177.8 keV ] > ¹³⁵Ba						100.000'000	%	¹³⁵Ba
Isotope_057_la_136_u	Unstable	¹³⁶La	Fermion	57	p	79	n	1	1	135.907'635'536'0	u	~ 0	%	~ 0	-86.036'945'000'0	MeV	8.376'046'000'0	MeV	-		-		1.88E-5	year	592.020	seconds ( x⁰ )	100.000'000	%	β+	1,827.800	keV	¹³⁶Ba	¹³⁶La > [ 100 % , β+ , 1,827.8 keV ] > ¹³⁶Ba						100.000'000	%	¹³⁶Ba
Isotope_057_la_137_u	Unstable	¹³⁷La	Boson	57	p	80	n	7/2	1	136.906'493'598'0	u	~ 0	%	~ 0	-87.100'653'000'0	MeV	8.381'586'000'0	MeV	2.695'000'000'0	nm	0.240'000'000'0	b	6.02E+4	years	1.900	tera-seconds ( x¹² )	100.000'000	%	ϵ	620.600	keV	¹³⁷Ba	¹³⁷La > [ 100 % , ϵ , 620.6 keV ] > ¹³⁷Ba						100.000'000	%	¹³⁷Ba
Isotope_057_la_138_u	Unstable	¹³⁸La	Fermion	57	p	81	n	5	1	137.907'111'930'0	u	0.090'000	%	0.124'116'400'7	-86.524'681'000'0	MeV	28.375'164'000'0	MeV	3.713'646'000'0	nm	0.450'000'000'0	b	1.02E+11	years	3.222	exa-seconds ( x¹⁸ )	65.600'000	%	β+	714.750	keV	¹³⁸Ba	¹³⁸La > [ 65.6 % , β+ , 714.75 keV ] > ¹³⁸Ba	β-	1,043.800	keV	¹³⁸Ce	¹³⁸La > [ , β- , 1,043.8 keV ] > ¹³⁸Ce	65.600'000	%	¹³⁸Ba
Isotope_057_la_139_s	Stable	¹³⁹La	Boson	57	p	82	n	7/2	1	138.906'353'267'0	u	99.910'000	%	138.781'337'549'1	-87.231'371'000'0	MeV	8.378'063'000'0	MeV	2.783'045'500'0	nm	0.200'000'000'0	b	-
Isotope_057_la_140_u	Unstable	¹⁴⁰La	Fermion	57	p	83	n	3	-1	139.909'477'645'0	u	~ 0	%	~ 0	-84.321'031'000'0	MeV	8.355'083'000'0	MeV	0.750'000'000'0	nm	0.094'000'000'0	b	4.59E-3	year	144.990	kilo-seconds ( x³ )	100.000'000	%	β-	3,762.250	keV	¹⁴⁰Ce	¹⁴⁰La > [ 100 % , β- , 3,762.25 keV ] > ¹⁴⁰Ce						100.000'000	%	¹⁴⁰Ce
Isotope_057_la_141_u	Unstable	¹⁴¹La	Boson	57	p	84	n	7/2	1	140.910'962'152'0	u	~ 0	%	~ 0	-82.938'221'000'0	MeV	8.343'264'000'0	MeV	-		-		4.47E-4	year	14.101	kilo-seconds ( x³ )	100.000'000	%	β-	2,501.880	keV	¹⁴¹Ce	¹⁴¹La > [ 100 % , β- , 2,501.88 keV ] > ¹⁴¹Ce						100.000'000	%	¹⁴¹Pr
Isotope_057_la_142_u	Unstable	¹⁴²La	Fermion	57	p	85	n	2	-1	141.914'079'130'0	u	~ 0	%	~ 0	-80.034'775'000'0	MeV	8.320'902'000'0	MeV	-		-		1.73E-4	year	5.470	kilo-seconds ( x³ )	100.000'000	%	β-	4,503.000	keV	¹⁴²Ce	¹⁴²La > [ 100 % , β- , 4,503.0 keV ] > ¹⁴²Ce						?	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_057_la_143_u	Unstable	¹⁴³La	Boson	57	p	86	n	7/2	1	142.916'062'720'0	u	~ 0	%	~ 0	-78.187'073'000'0	MeV	8.306'235'000'0	MeV	-		-		2.70E-5	year	852.000	seconds ( x⁰ )	100.000'000	%	β-	3,424.900	keV	¹⁴³Ce	¹⁴³La > [ 100 % , β- , 3,424.9 keV ] > ¹⁴³Ce						100.000'000	%	¹⁴³Nd
Isotope_057_la_144_u	Unstable	¹⁴⁴La	Fermion	57	p	87	n	3	-1	143.919'599'647'0	u	~ 0	%	~ 0	-74.892'447'000'0	MeV	8.281'725'000'0	MeV	-		-		1.29E-6	year	40.800	seconds ( x⁰ )	100.000'000	%	β-	5,544.500	keV	¹⁴⁴Ce	¹⁴⁴La > [ 100 % , β- , 5,544.5 keV ] > ¹⁴⁴Ce						100.000'000	%	¹⁴⁰Ce
Isotope_057_la_145_u	Unstable	¹⁴⁵La	Boson	57	p	88	n	5/2	1	144.921'645'401'0	u	~ 0	%	~ 0	-72.986'839'000'0	MeV	8.267'131'000'0	MeV	-		-		7.86E-7	year	24.800	seconds ( x⁰ )	100.000'000	%	β-	4,110.000	keV	¹⁴⁵Ce	¹⁴⁵La > [ 100 % , β- , 4,110.0 keV ] > ¹⁴⁵Ce						100.000'000	%	¹⁴⁵Nd
Isotope_057_la_146_u	Unstable	¹⁴⁶La	Fermion	57	p	89	n	2	-1	145.925'793'460'0	u	~ 0	%	~ 0	-69.122'947'000'0	MeV	8.239'325'000'0	MeV	-		-		1.99E-7	year	6.270	seconds ( x⁰ )	100.000'000	%	β-	6,552.500	keV	¹⁴⁶Ce	¹⁴⁶La > [ 100 % , β- , 6,552.5 keV ] > ¹⁴⁶Ce						?	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_057_la_147_u	Unstable	¹⁴⁷La	Boson	57	p	90	n	5/2	1	146.928'235'284'0	u	~ 0	%	~ 0	-66.848'403'000'0	MeV	8.222'709'000'0	MeV	-		-		1.27E-7	year	4.015	seconds ( x⁰ )	100.000'000	%	β-	5,180.300	keV	¹⁴⁷Ce	¹⁴⁷La > [ 100 % , β- , 5,180.3 keV ] > ¹⁴⁷Ce	β-n	755.800	keV	¹⁴⁶Ce	¹⁴⁷La > [ , β-n , 755.8 keV ] > ¹⁴⁶Ce	100.000'000	%	¹⁴³Nd	?	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_057_la_148_u	Unstable	¹⁴⁸La	Fermion	57	p	91	n	2	-1	147.932'228'868'0	u	~ 0	%	~ 0	-63.128'403'000'0	MeV	8.196'551'000'0	MeV	-		-		3.99E-8	year	1.260	seconds ( x⁰ )	100.000'000	%	β-	7,262.400	keV	¹⁴⁸Ce	¹⁴⁸La > [ 100 % , β- , 7,262.4 keV ] > ¹⁴⁸Ce	β-n	829.000	keV	¹⁴⁷Ce	¹⁴⁸La > [ , β-n , 829.0 keV ] > ¹⁴⁷Ce	0.150'000	%	¹⁴³Nd	?	%	¹⁴⁰Ce
Isotope_057_la_149_u	Unstable	¹⁴⁹La	Boson	57	p	92	n	5/2	1	148.934'734'000'0	u	~ 0	%	~ 0	-60.795'000'000'0	MeV	8.180'000'000'0	MeV	-		-		3.33E-8	year	1.050	seconds ( x⁰ )	99.000'000	%	β-	5,900.000	keV	¹⁴⁹Ce	¹⁴⁹La > [ 99 % , β- , 5,900.0 keV ] > ¹⁴⁹Ce	β-n	1,524.000	keV	¹⁴⁸Nd	¹⁴⁹La > [ , β-n , 1,524.0 keV ] > ¹⁴⁸Nd
Isotope_057_la_150_u	Unstable	¹⁵⁰La	Fermion	57	p	93	n	3	1	149.938'770'000'0	u	~ 0	%	~ 0	-57.035'000'000'0	MeV	8.154'000'000'0	MeV	-		-		1.62E-8	year	510.000	milli-seconds ( x⁻³ )	97.000'000	%	β-	7,788.000	keV	¹⁵⁰Ce	¹⁵⁰La > [ 97 % , β- , 7,788.0 keV ] > ¹⁵⁰Ce	β-n	1,588.000	keV	¹⁴⁹Ce	¹⁵⁰La > [ , β-n , 1,588.0 keV ] > ¹⁴⁹Ce	97.000'000	%	¹⁵⁰Sm	?	%	¹⁴⁵Nd
Isotope_057_la_151_u	Unstable	¹⁵¹La	Boson	57	p	94	n	5/2	1	150.941'720'000'0	u	~ 0	%	~ 0	-54.287'000'000'0	MeV	8.136'8.136'8.136'8.136	MeV	-		-		9.51E-9	year	300.000	milli-seconds ( x⁻³ )	?	%	β-	7,213.000	keV	¹⁵¹Ce	¹⁵¹La > [ ? % , β- , 7,213.0 keV ] > ¹⁵¹Ce						?	%	¹⁵¹Eu
Isotope_057_la_152_u	Unstable	¹⁵²La	Fermion	57	p	95	n	?	0	151.946'250'000'0	u	~ 0	%	~ 0	-50.068'000'000'0	MeV	8.107'000'000'0	MeV	-		-		6.34E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β-	9,045.000	keV	¹⁵²Ce	¹⁵²La > [ ? % , β- , 9,045.0 keV ] > ¹⁵²Ce						?	%	¹⁵²Sm
Isotope_057_la_153_u	Unstable	¹⁵³La	Boson	57	p	96	n	5/2	1	152.949'620'000'0	u	~ 0	%	~ 0	-46.929'000'000'0	MeV	8.087'000'000'0	MeV	-		-		4.75E-9	year	150.000	milli-seconds ( x⁻³ )	?	%	β-	8,421.000	keV	¹⁵³Ce	¹⁵³La > [ ? % , β- , 8,421.0 keV ] > ¹⁵³Ce						?	%	¹⁵³Eu
Isotope_057_la_154_u	Unstable	¹⁵⁴La	Fermion	57	p	97	n	?	0	153.954'500'000'0	u	~ 0	%	~ 0	-42.383'000'000'0	MeV	8.057'000'000'0	MeV	-		-		3.17E-9	year	100.000	milli-seconds ( x⁻³ )	?	%	β-	10,321.000	keV	¹⁵⁴Ce	¹⁵⁴La > [ ? % , β- , 10,321.0 keV ] > ¹⁵⁴Ce						?	%	¹⁵⁴Gd
Isotope_057_la_155_u	Unstable	¹⁵⁵La	Boson	57	p	97	n	5/2	1	154.958'350'000'0	u	~ 0	%	~ 0	-38.797'000'000'0	MeV	8.034'000'000'0	MeV	-		-		1.90E-9	year	60.000	milli-seconds ( x⁻³ )	?	%	β-	9,604.000	keV	¹⁵⁵Ce	¹⁵⁵La > [ ? % , β- , 9,604.0 keV ] > ¹⁵⁵Ce						?	%	¹⁵⁵Gd

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