CERIUM, Ce (58)

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ATOMIC ARCHITECTURE

Spectrograph

Elemental Tile

Cerium from Cerite

···

OVERVIEW

CERIUM

Ce (58)

ˈsɪəriəm

PHONETICS

IDENTIFICATION

Cerium is a soft, silvery, ductile metal which easily oxidizes in air. Named after the dwarf planet Ceres (itself named after the Roman goddess of agriculture). Cerium is the most abundant of the rare earth elements, making up about 0.0046% of the Earth’s crust by weight.

ELEMENT BRIEF

1803 by Wilhelm von Hisinger, Jöns Jacob Berzelius and Martin Klaproth, Sweden.

DISCOVERY

Named after the Asteroid Ceres (Dwarf Planet), discovered in 1801.

ETYMOLOGY

Cerium

ELEMENT

Ce

SYMBOL

58

ATOMIC NUMBER

7440-45-1

CAS NUMBER

PHYSICAL

ELEMENTAL SPECTRUM

Silver

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

0.240

POISSON RATIO

20.947 cm³

MOLAR VOLUME

412.00M Pa, 4.066'1k Atm

BRINELL HARDNESS

2.50

MOHS HARDNESS

270.00M Pa, 2.664'7k Atm

VICKERS HARDNESS

2,100 m/s, Mach 6.122'4

SPEED OF SOUND

22.00G Pa, 217.123'1k Atm

BULK MODULUS

14.00G Pa, 138.169'3k Atm

SHEAR MODULUS

34.00G Pa, 335.553'9k Atm

YOUNG MODULUS

ALLOTROPES

THERMODYNAMIC

1,071.15 K, 798.00 °C

MELTING POINT

3,633.15 K, 3,360.00 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

-

CRITICAL TEMPERATURE

-

CRITICAL PRESSURE

11.000'000 W/(m K)

THERMAL CONDUCTIVITY

0.000'006'3 K¯¹

THERMAL EXPANSION

192.00 J/(kg K)

SPECIFIC HEAT

5.500 kJ/mol

HEAT FUSION

350.000 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

12.50 K, -260.65 °C

CURIE POINT

-

NEEL POINT

-

ADIABATIC INDEX

Solid

PHASE

ELECTROMAGNETIC

Conductor

ELECTRICAL TYPE

1.40M S/m

CONDUCTIVITY

740.00n Ω.m

RESISTIVITY

0.022 K

SUPERCONDUCTING POINT

Paramagnetic

MAGNETIC TYPE

0.000'000'220'0

MASS SUSCEPTIBILITY

0.000'000'030'826'00

MOLAR SUSCEPTIBILITY

0.001'471'600'00

VOLUME SUSCEPTIBILITY

STRUCTURE

Lanthanide

CLASSIFICATION

140.115'726'2

ATOMIC WEIGHT

183 pm

ATOMIC RADIUS

163 pm

COVALENT RADIUS SINGLE BOND

137 pm

COVALENT RADIUS DOUBLE BOND

131 pm

COVALENT RADIUS TRIPLE BOND

235 pm

VAN DER WAALS RADIUS

[Xe]6s²4f¹5d¹

ELECTRON CONFIGURATION

Hexagonal, Close Packed Double

CRYSTAL STRUCTURE

6.689'00 g/cm³

DENSITY AS SOLID

6.550'00 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

362, 362 599 pm

LATTICE CONSTANTS

REACTIVITY

4

VALENCE

1.12

ELECTRONEGATIVITY

92.15 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY

ELEMENTAL DISTRIBUTION

0.000'001 %

UNIVERSE

0.000'075 %

METEORITES

0.000'000'4 %

SUN

0.006 %

EARTH CRUST

0.000'000'000'12 %

OCEANS

-

HUMANS

ISOTOPES

Stable

HALF LIFE

Stable

LIFETIME

5d¹ = 5, 2, -2, +1/22

QUANTUM NUMBERS

2.940'00 b σ_s

NEUTRON CROSS SECTION

0.630'00 b σ_a

NEUTRON MASS ABSORPTION

STABLE ISOTOPES

UNSTABLE ISOTOPES

ISOTOPIC CHAIN

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	&nbsp	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
Isotope_058_ce_119_u	Unstable	¹¹⁹Ce	Fermion	58	p	61	n	5/2	1	118.952'760'000'0	u	~ 0	%	~ 0	-44.004'000'000'0	MeV	8.060'000'000'0	MeV	-		-	6.338E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β+	9,942.000	keV	¹¹⁹La	¹¹⁹Ce > [ ? % , β+ , 9,942.0 keV ] > ¹¹⁹La						?	%	¹¹⁹Sn	?	%	¹¹⁸Sn	?	%	¹¹⁵Sn
Isotope_058_ce_120_u	Unstable	¹²⁰Ce	Boson	58	p	62	n	0	1	119.946'640'000'0	u	~ 0	%	~ 0	-49.705'000'000'0	MeV	8.107'000'000'0	MeV	-		-	7.922E-9	year	250.000	milli-seconds ( x⁻³ )	?	%	β+	6,961.000	keV	¹²⁰La	¹²⁰Ce > [ ? % , β+ , 6,961.0 keV ] > ¹²⁰La						?	%	¹¹⁹Sn	?	%	¹¹⁶Sn	?	%	¹¹⁵Sn	?	%	¹²⁰Sn
Isotope_058_ce_121_u	Unstable	¹²¹Ce	Fermion	58	p	63	n	5/2	1	120.943'420'000'0	u	~ 0	%	~ 0	-52.704'000'000'0	MeV	8.132'000'000'0	MeV	-		-	3.486E-8	year	1.100	seconds ( x⁰ )	99.000'000	%	β+	8,675.000	keV	¹²¹La	¹²¹Ce > [ 99 % , β+ , 8,675.0 keV ] > ¹²¹La	β+p	?	keV	¹²⁰Ba	¹²¹Ce > [ , β+p , ? keV ] > ¹²⁰Ba	99.000'000	%	¹²¹Sb	0.000'000	%	¹¹⁶Sn	0.000'000	%	¹¹⁹Sn	?	%	¹²⁰Sn
Isotope_058_ce_122_u	Unstable	¹²²Ce	Boson	58	p	64	n	0	1	121.937'910'000'0	u	~ 0	%	~ 0	-57.836'000'000'0	MeV	8.173'000'000'0	MeV	-		-	6.338E-8	year	2.000	seconds ( x⁰ )	?	%	β+	5,685.000	keV	¹²²La	¹²²Ce > [ ? % , β+ , 5,685.0 keV ] > ¹²²La	β+p	?	keV	¹²¹Ba	¹²²Ce > [ , β+p , ? keV ] > ¹²¹Ba	?	%	¹¹⁸Sb	?	%	¹²²Te	?	%	¹²¹Sb	?	%	¹²⁰Sn
Isotope_058_ce_123_u	Unstable	¹²³Ce	Fermion	58	p	65	n	5/2	1	122.935'400'000'0	u	~ 0	%	~ 0	-60.175'000'000'0	MeV	8.192'000'000'0	MeV	-		-	1.204E-7	year	3.800	seconds ( x⁰ )	100.000'000	%	β+	7,510.000	keV	¹²³La	¹²³Ce > [ 100 % , β+ , 7,510.0 keV ] > ¹²³La	β+p	?	keV	¹²²Ba	¹²³Ce > [ , β+p , ? keV ] > ¹²²Ba	100.000'000	%	¹²³Sb	?	%	¹¹⁸Sn	?	%	¹²²Te
Isotope_058_ce_124_u	Unstable	¹²⁴Ce	Boson	58	p	66	n	0	1	123.930'410'000'0	u	~ 0	%	~ 0	-64.823'000'000'0	MeV	8.228'000'000'0	MeV	-		-	2.884E-7	year	9.100	seconds ( x⁰ )	100.000'000	%	β+	4,414.000	keV	¹²⁴La	¹²⁴Ce > [ 100 % , β+ , 4,414.0 keV ] > ¹²⁴La						?	%	¹²⁴Te
Isotope_058_ce_125_u	Unstable	¹²⁵Ce	Fermion	58	p	67	n	7/2	1	124.928'440'000'0	u	~ 0	%	~ 0	-66.658'000'000'0	MeV	8.242'000'000'0	MeV	-		-	2.947E-7	year	9.300	seconds ( x⁰ )	100.000'000	%	β+	6,080.000	keV	¹²⁵La	¹²⁵Ce > [ 100 % , β+ , 6,080.0 keV ] > ¹²⁵La	β+p	?	keV	¹²⁴Ba	¹²⁵Ce > [ , β+p , ? keV ] > ¹²⁴Ba	100.000'000	%	¹²⁵Te	?	%	¹²⁴Te
Isotope_058_ce_126_u	Unstable	¹²⁶Ce	Boson	58	p	68	n	0	1	125.923'971'000'0	u	~ 0	%	~ 0	-70.820'558'000'0	MeV	8.273'257'000'0	MeV	-		-	1.616E-6	year	51.000	seconds ( x⁰ )	100.000'000	%	β+	3,130.700	keV	¹²⁶La	¹²⁶Ce > [ 100 % , β+ , 3,130.7 keV ] > ¹²⁶La						?	%	¹²⁶Te
Isotope_058_ce_127_u	Unstable	¹²⁷Ce	Fermion	58	p	69	n	5/2	1	126.922'731'000'0	u	~ 0	%	~ 0	-71.975'611'000'0	MeV	8.280'762'000'0	MeV	-		-	9.183E-7	year	28.980	seconds ( x⁰ )	100.000'000	%	β+	4,898.000	keV	¹²⁷La	¹²⁷Ce > [ 100 % , β+ , 4,898.0 keV ] > ¹²⁷La						100.000'000	%	¹²⁷I
Isotope_058_ce_128_u	Unstable	¹²⁸Ce	Boson	58	p	70	n	0	1	127.918'911'000'0	u	~ 0	%	~ 0	-75.533'918'000'0	MeV	8.306'925'000'0	MeV	-		-	7.478E-6	year	235.980	seconds ( x⁰ )	100.000'000	%	β+	2,075.800	keV	¹²⁸La	¹²⁸Ce > [ 100 % , β+ , 2,075.8 keV ] > ¹²⁸La						100.000'000	%	¹²⁸Xe
Isotope_058_ce_129_u	Unstable	¹²⁹Ce	Fermion	58	p	71	n	5/2	1	128.918'102'000'0	u	~ 0	%	~ 0	-76.287'496'000'0	MeV	8.310'940'000'0	MeV	-		-	6.654E-6	year	210.000	seconds ( x⁰ )	100.000'000	%	β+	4,016.400	keV	¹²⁹La	¹²⁹Ce > [ 100 % , β+ , 4,016.4 keV ] > ¹²⁹La						100.000'000	%	¹²⁹Xe
Isotope_058_ce_130_u	Unstable	¹³⁰Ce	Boson	58	p	72	n	0	1	129.914'736'000'0	u	~ 0	%	~ 0	-79.422'905'000'0	MeV	8.333'8.333'8.333'8.333	MeV	-		-	4.341E-6	year	136.998	seconds ( x⁰ )	100.000'000	%	β+	1,182.900	keV	¹³⁰La	¹³⁰Ce > [ 100 % , β+ , 1,182.9 keV ] > ¹³⁰La						?	%	¹³⁰Xe
Isotope_058_ce_131_u	Unstable	¹³¹Ce	Fermion	58	p	73	n	7/2	1	130.914'422'000'0	u	~ 0	%	~ 0	-79.715'394'000'0	MeV	8.333'449'000'0	MeV	-		-	1.939E-6	year	61.200	seconds ( x⁰ )	100.000'000	%	β+	3,031.700	keV	¹³²La	¹³¹Ce > [ 100 % , β+ , 3,031.7 keV ] > ¹³²La						100.000'000	%	¹³¹Xe
Isotope_058_ce_132_u	Unstable	¹³²Ce	Boson	58	p	74	n	0	1	131.911'460'487'0	u	~ 0	%	~ 0	-82.474'025'000'0	MeV	8.352'362'000'0	MeV	-		-	3.993E-4	year	12.600	kilo-seconds ( x³ )	100.000'000	%	β+	244.000	keV	¹³²La	¹³²Ce > [ 100 % , β+ , 244.0 keV ] > ¹³²La						?	%	¹³²Xe
Isotope_058_ce_133_u	Unstable	¹³³Ce	Fermion	58	p	75	n	1/2	1	132.911'515'020'0	u	~ 0	%	~ 0	-82.423'228'000'0	MeV	8.349'867'000'0	MeV	-		-	1.837E-4	year	5.796	kilo-seconds ( x³ )	100.000'000	%	β+	2,049.000	keV	¹³³La	¹³³Ce > [ 100 % , β+ , 2,049.0 keV ] > ¹³³La						100.000'000	%	¹³³Cs
Isotope_058_ce_134_u	Unstable	¹³⁴Ce	Boson	58	p	76	n	0	1	133.908'924'821'0	u	~ 0	%	~ 0	-84.835'983'000'0	MeV	8.365'794'000'0	MeV	-		-	8.652E-3	year	273.024	kilo-seconds ( x³ )	100.000'000	%	ϵ	382.700	keV	¹³⁴La	¹³⁴Ce > [ 100 % , ϵ , 382.7 keV ] > ¹³⁴La						100.000'000	%	¹³⁴Ba
Isotope_058_ce_135_u	Unstable	¹³⁵Ce	Fermion	58	p	77	n	1/2	1	134.909'151'396'0	u	~ 0	%	~ 0	-84.624'930'000'0	MeV	8.362'049'000'0	MeV	-		-	2.018E-3	year	63.684	kilo-seconds ( x³ )	100.000'000	%	β+	1,003.380	keV	¹³⁵La	¹³⁵Ce > [ 100 % , β+ , 1,003.38 keV ] > ¹³⁵La						100.000'000	%	¹³⁵Ba
Isotope_058_ce_136_s	Stable	¹³⁶Ce	Boson	58	p	78	n	0	1	135.907'172'422'0	u	0.185'000	%	0.251'428'269'0	-86.468'332'000'0	MeV	8.373'466'000'0	MeV	-		-	-				?	%	2β+	374.200	keV	¹³⁶Ba	¹³⁶Ce > [ ? % , 2β+ , 374.2 keV ] > ¹³⁶Ba						?	%	¹³⁶Ba
Isotope_058_ce_137_u	Unstable	¹³⁷Ce	Fermion	58	p	79	n	3/2	1	136.907'805'577'0	u	~ 0	%	~ 0	-85.878'553'000'0	MeV	8.366'955'000'0	MeV	0.960'000'000'0	nm	-	1.014E-3	year	32.004	kilo-seconds ( x³ )	100.000'000	%	β+	199.900	keV	¹³⁷La	¹³⁷Ce > [ 100 % , β+ , 199.9 keV ] > ¹³⁷La						100.000'000	%	¹³⁷Ba
Isotope_058_ce_138_s	Stable	¹³⁸Ce	Boson	58	p	80	n	0	1	137.905'991'321'0	u	0.251'000	%	0.346'144'038'2	-87.568'521'000'0	MeV	8.377'059'000'0	MeV	-		-	-				100.000'000	%	2β+	-1,351.300	keV	¹³⁸Ba	¹³⁸Ce > [ 100 % , 2β+ , -1,351.3 keV ] > ¹³⁸Ba						?	%	¹³⁸Ba
Isotope_058_ce_139_u	Unstable	¹³⁹Ce	Fermion	58	p	81	n	3/2	1	138.906'652'651'0	u	~ 0	%	~ 0	-86.952'496'000'0	MeV	8.370'428'000'0	MeV	0.910'000'000'0	nm	-	3.768E-1	year	11.892	mega-seconds ( x⁶ )	100.000'000	%	ϵ	278.880	keV	¹³⁹La	¹³⁹Ce > [ 100 % , ϵ , 278.88 keV ] > ¹³⁹La						100.000'000	%	¹³⁹La
Isotope_058_ce_140_s	Stable	¹⁴⁰Ce	Boson	58	p	82	n	0	1	139.905'438'706'0	u	88.450'000	%	123.746'360'535'5	-88.083'278'000'0	MeV	8.376'368'000'0	MeV	-		-	-
Isotope_058_ce_141_u	Unstable	¹⁴¹Ce	Fermion	58	p	83	n	7/2	-1	140.908'276'270'0	u	~ 0	%	~ 0	-85.440'105'000'0	MeV	8.355'459'000'0	MeV	1.090'000'000'0	nm	-	8.900E-2	year	2.809	mega-seconds ( x⁶ )	100.000'000	%	β-	580.790	keV	¹⁴¹Pr	¹⁴¹Ce > [ 100 % , β- , 580.79 keV ] > ¹⁴¹Pr						100.000'000	%	¹⁴¹Pr
Isotope_058_ce_142_s	Stable	¹⁴²Ce	Boson	58	p	84	n	0	1	141.909'244'205'0	u	11.114'000	%	15.771'793'400'9	-84.538'479'000'0	MeV	8.347'8.347'8.347'8.347	MeV	-		-	-				?	%	α	1,298.240	keV	¹³⁸Ba	¹⁴²Ce > [ ? % , α , 1,298.24 keV ] > ¹³⁸Ba	2β-	1,416.720	keV	¹⁴²Nd	¹⁴²Ce > [ , 2β- , 1,416.72 keV ] > ¹⁴²Nd	?	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_058_ce_143_u	Unstable	¹⁴³Ce	Fermion	58	p	85	n	3/2	-1	142.912'385'910'0	u	~ 0	%	~ 0	-81.611'999'000'0	MeV	8.324'715'000'0	MeV	-		-	3.769E-3	year	118.940	kilo-seconds ( x³ )	100.000'000	%	β-	1,461.500	keV	¹⁴³Pr	¹⁴³Ce > [ 100 % , β- , 1,461.5 keV ] > ¹⁴³Pr						100.000'000	%	¹⁴³Nd
Isotope_058_ce_144_u	Unstable	¹⁴⁴Ce	Boson	58	p	86	n	0	1	143.913'647'336'0	u	~ 0	%	~ 0	-80.436'989'000'0	MeV	8.314'795'000'0	MeV	-		-	7.800E-1	year	24.616	mega-seconds ( x⁶ )	100.000'000	%	β-	318.656	keV	¹⁴⁴Pr	¹⁴⁴Ce > [ 100 % , β- , 318.656 keV ] > ¹⁴⁴Pr						100.000'000	%	¹⁴⁰Ce
Isotope_058_ce_145_u	Unstable	¹⁴⁵Ce	Fermion	58	p	87	n	3/2	1	144.917'233'135'0	u	~ 0	%	~ 0	-77.096'839'000'0	MeV	8.290'081'000'0	MeV	-		-	5.736E-6	year	181.020	seconds ( x⁰ )	100.000'000	%	β-	2,535.000	keV	¹⁴⁵Pr	¹⁴⁵Ce > [ 100 % , β- , 2,535.0 keV ] > ¹⁴⁵Pr						100.000'000	%	¹⁴⁵Nd
Isotope_058_ce_146_u	Unstable	¹⁴⁶Ce	Boson	58	p	88	n	0	1	145.918'759'009'0	u	~ 0	%	~ 0	-75.675'496'000'0	MeV	8.278'847'000'0	MeV	-		-	2.571E-5	year	811.200	seconds ( x⁰ )	100.000'000	%	β-	1,038.300	keV	¹⁴⁶Pr	¹⁴⁶Ce > [ 100 % , β- , 1,038.3 keV ] > ¹⁴⁶Pr						?	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_058_ce_147_u	Unstable	¹⁴⁷Ce	Fermion	58	p	89	n	5/2	-1	146.922'673'954'0	u	~ 0	%	~ 0	-72.028'748'000'0	MeV	8.252'628'000'0	MeV	-		-	1.787E-6	year	56.400	seconds ( x⁰ )	100.000'000	%	β-	3,426.000	keV	¹⁴⁷Pr	¹⁴⁷Ce > [ 100 % , β- , 3,426.0 keV ] > ¹⁴⁷Pr						?	%	¹⁴³Nd
Isotope_058_ce_148_u	Unstable	¹⁴⁸Ce	Boson	58	p	90	n	0	1	147.924'432'410'0	u	~ 0	%	~ 0	-70.390'756'000'0	MeV	8.240'335'000'0	MeV	-		-	1.774E-6	year	55.980	seconds ( x⁰ )	100.000'000	%	β-	2,140.000	keV	¹⁴⁸Pr	¹⁴⁸Ce > [ 100 % , β- , 2,140.0 keV ] > ¹⁴⁸Pr						?	%	¹⁴⁰Ce
Isotope_058_ce_149_u	Unstable	¹⁴⁹Ce	Fermion	58	p	91	n	3/2	1	148.928'399'883'0	u	~ 0	%	~ 0	-66.695'080'000'0	MeV	8.214'397'000'0	MeV	-		-	1.679E-7	year	5.300	seconds ( x⁰ )	100.000'000	%	β-	4,361.500	keV	¹⁴⁹Pr	¹⁴⁹Ce > [ 100 % , β- , 4,361.5 keV ] > ¹⁴⁹Pr						?	%	¹⁴⁵Nd
Isotope_058_ce_150_u	Unstable	¹⁵⁰Ce	Boson	58	p	92	n	0	1	149.930'408'931'0	u	~ 0	%	~ 0	-64.823'663'000'0	MeV	8.200'968'000'0	MeV	-		-	1.268E-7	year	4.000	seconds ( x⁰ )	100.000'000	%	β-	3,480.000	keV	¹⁵⁰Pr	¹⁵⁰Ce > [ 100 % , β- , 3,480.0 keV ] > ¹⁵⁰Pr						100.000'000	%	¹⁵⁰Sm
Isotope_058_ce_151_u	Unstable	¹⁵¹Ce	Fermion	58	p	93	n	3/2	-1	150.933'976'196'0	u	~ 0	%	~ 0	-61.500'777'000'0	MeV	8.178'103'000'0	MeV	-		-	3.232E-8	year	1.020	seconds ( x⁰ )	100.000'000	%	β-	5,270.000	keV	¹⁵¹Pr	¹⁵¹Ce > [ 100 % , β- , 5,270.0 keV ] > ¹⁵¹Pr						100.000'000	%	¹⁵¹Eu
Isotope_058_ce_152_u	Unstable	¹⁵²Ce	Boson	58	p	94	n	0	1	151.936'540'000'0	u	~ 0	%	~ 0	-59.113'000'000'0	MeV	8.162'000'000'0	MeV	-		-	3.486E-8	year	1.100	seconds ( x⁰ )	100.000'000	%	β-	4,695.000	keV	¹⁵²Pr	¹⁵²Ce > [ 100 % , β- , 4,695.0 keV ] > ¹⁵²Pr						100.000'000	%	¹⁵²Sm
Isotope_058_ce_153_u	Unstable	¹⁵³Ce	Fermion	58	p	95	n	3/2	-1	152.940'580'000'0	u	~ 0	%	~ 0	-55.349'000'000'0	MeV	8.137'000'000'0	MeV	-		-	1.584E-8	year	500.000	milli-seconds ( x⁻³ )	?	%	β-	6,279.000	keV	¹⁵³Pr	¹⁵³Ce > [ ? % , β- , 6,279.0 keV ] > ¹⁵³Pr						?	%	¹⁵³Eu
Isotope_058_ce_154_u	Unstable	¹⁵⁴Ce	Boson	58	p	96	n	0	1	153.943'420'000'0	u	~ 0	%	~ 0	-52.704'000'000'0	MeV	8.119'000'000'0	MeV	-		-	9.506E-9	year	300.000	milli-seconds ( x⁻³ )	?	%	β-	5,498.000	keV	¹⁵⁴Pr	¹⁵⁴Ce > [ ? % , β- , 5,498.0 keV ] > ¹⁵⁴Pr						?	%	¹⁵⁴Gd
Isotope_058_ce_155_u	Unstable	¹⁵⁵Ce	Fermion	58	p	97	n	5/2	-1	154.948'040'000'0	u	~ 0	%	~ 0	-48.400'000'000'0	MeV	8.091'000'000'0	MeV	-		-	6.338E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β-	7,377.000	keV	¹⁵⁵Pr	¹⁵⁵Ce > [ ? % , β- , 7,377.0 keV ] > ¹⁵⁵Pr						?	%	¹⁵⁵Gd
Isotope_058_ce_156_u	Unstable	¹⁵⁶Ce	Boson	58	p	98	n	0	1	155.951'260'000'0	u	~ 0	%	~ 0	-45.401'000'000'0	MeV	8.071'000'000'0	MeV	-		-	4.753E-9	year	150.000	milli-seconds ( x⁻³ )	?	%	β-	6,511.000	keV	¹⁵⁶Pr	¹⁵⁶Ce > [ ? % , β- , 6,511.0 keV ] > ¹⁵⁶Pr						?	%	¹⁵⁶Gd
Isotope_058_ce_157_u	Unstable	¹⁵⁷Ce	Fermion	58	p	99	n	7/2	1	156.956'340'000'0	u	~ 0	%	~ 0	-40.669'000'000'0	MeV	8.041'000'000'0	MeV	-		-	1.584E-9	year	50.000	milli-seconds ( x⁻³ )	?	%	β-	8,300.000	keV	¹⁵⁷Pr	¹⁵⁷Ce > [ ? % , β- , 8,300.0 keV ] > ¹⁵⁷Pr						?	%	¹⁵⁷Gd

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