PRASEODYMIUM, Pr (59)

HYDROGEN TO OGANESSON

ATOMIC ARCHITECTURE

Spectrograph

Elemental Tile

Praseodymium from Monazite

···

OVERVIEW

PRASEODYMIUM

Pr (59)

ˌpræsioʊˈdɪmiəm

PHONETICS

IDENTIFICATION

Praseodymium is as an alloying agent with magnesium to create high-strength metals that are used in aircraft engines. Praseodymium also makes up about 5% of Misch metal, a material that is used to make flints for lighters. Praseodymium forms the core of carbon arc lights which are used in the motion picture industry for studio lighting and projector lights.

ELEMENT BRIEF

1885 by Carl F. Auer von Welsbach, Austria.

DISCOVERY

Greek, 'prasios didymos' meaning 'green twin'.

ETYMOLOGY

Praseodymium

ELEMENT

Pr

SYMBOL

59

ATOMIC NUMBER

7440-10-0

CAS NUMBER

PHYSICAL

ELEMENTAL SPECTRUM

Silver

ELEMENTAL COLOUR

-

REFRACTIVE INDEX

0.280

POISSON RATIO

21.221 cm³

MOLAR VOLUME

481.00M Pa, 4.747'1k Atm

BRINELL HARDNESS

1.40

MOHS HARDNESS

400.00M Pa, 3.947'7k Atm

VICKERS HARDNESS

2,280 m/s, Mach 6.647'2

SPEED OF SOUND

29.00G Pa, 286.207'7k Atm

BULK MODULUS

15.00G Pa, 148.038'5k Atm

SHEAR MODULUS

37.00G Pa, 365.161'6k Atm

YOUNG MODULUS

ALLOTROPES

THERMODYNAMIC

1,204.15 K, 931.00 °C

MELTING POINT

3,563.15 K, 3,290.00 °C

BOILING POINT

-

AUTOMATIC IGNITION

-

FLASHPOINT

-

CRITICAL TEMPERATURE

-

CRITICAL PRESSURE

13.000'000 W/(m K)

THERMAL CONDUCTIVITY

0.000'006'7 K¯¹

THERMAL EXPANSION

193.00 J/(kg K)

SPECIFIC HEAT

6.900 kJ/mol

HEAT FUSION

330.000 kJ/mol

HEAT VAPORISATION

-

HEAT COMBUSTION

-

CURIE POINT

-

NEEL POINT

-

ADIABATIC INDEX

Solid

PHASE

ELECTROMAGNETIC

Conductor

ELECTRICAL TYPE

1.40M S/m

CONDUCTIVITY

700.00n Ω.m

RESISTIVITY

-

SUPERCONDUCTING POINT

-

MAGNETIC TYPE

0.000'000'423'0

MASS SUSCEPTIBILITY

0.000'000'059'604'00

MOLAR SUSCEPTIBILITY

0.002'808'700'00

VOLUME SUSCEPTIBILITY

STRUCTURE

Lanthanide

CLASSIFICATION

140.907'652'8

ATOMIC WEIGHT

247 pm

ATOMIC RADIUS

176 pm

COVALENT RADIUS SINGLE BOND

138 pm

COVALENT RADIUS DOUBLE BOND

128 pm

COVALENT RADIUS TRIPLE BOND

239 pm

VAN DER WAALS RADIUS

[Xe]6s²4f³

ELECTRON CONFIGURATION

Hexagonal, Close Packed Double

CRYSTAL STRUCTURE

6.640'00 g/cm³

DENSITY AS SOLID

6.500'00 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

367.25, 367.25 1183.54 pm

LATTICE CONSTANTS

REACTIVITY

4

VALENCE

1.13

ELECTRONEGATIVITY

92.82 kJ/mol

ELECTRON AFFINITY

IONISATION ENERGY

ELEMENTAL DISTRIBUTION

0.000'000'2 %

UNIVERSE

0.000'009'8 %

METEORITES

0.000'000'1 %

SUN

0.000'86 %

EARTH CRUST

0.000'000'000'06 %

OCEANS

-

HUMANS

ISOTOPES

Stable

HALF LIFE

Stable

LIFETIME

4f³ = 4, 3, -1, +1/2

QUANTUM NUMBERS

2.660'00 b σ_s

NEUTRON CROSS SECTION

11.500'00 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	A03 Decay Probability		A03 Decay Mode	A03 Decay Energy		A03 Decay Daughter	A03 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
Isotope_059_pr_121_u	Unstable	¹²¹Pr	Boson	59	p	62	n	3/2	-1	120.955'364'000'0	u	~ 0	%	~ 0	-41.579'000'000'0	MeV	8.033'000'000'0	MeV	-		-		1.90E-8	year	600.000	milli-seconds ( x⁻³ )	?	%	p	837.000	keV	¹²⁰Ce	¹²¹Pr > [ ? % , p , 837.0 keV ] > ¹²⁰Ce	β+	10,103.000	keV	¹²¹Ce	¹²¹Pr > [ , β+ , 10,103.0 keV ] > ¹²¹Ce	?	%	β+p	?	keV	¹²⁰La	¹²¹Pr > [ ? % , β+p , ? keV ] > ¹²⁰La	?	%	¹¹⁹Sn	?	%	¹¹⁶Sn	?	%	¹¹⁵Sn	?	%	¹²¹Sb	?	%	¹²⁰Sn
Isotope_059_pr_122_u	Unstable	¹²²Pr	Fermion	59	p	63	n	?	0	121.951'810'000'0	u	~ 0	%	~ 0	-44.889'000'000'0	MeV	8.061'000'000'0	MeV	-		-		1.58E-8	year	500.000	milli-seconds ( x⁻³ )	?	%	β+	11,926.000	keV	¹²²Ce	¹²²Pr > [ ? % , β+ , 11,926.0 keV ] > ¹²²Ce													?	%	¹¹⁸Sn	?	%	¹²⁰Te	?	%	¹²¹Sb	?	%	¹²⁰Sn
Isotope_059_pr_123_u	Unstable	¹²³Pr	Boson	59	p	64	n	3/2	1	122.945'960'000'0	u	~ 0	%	~ 0	-50.338'000'000'0	MeV	8.105'000'000'0	MeV	-		-		2.54E-8	year	800.000	milli-seconds ( x⁻³ )	?	%	β+	8,815.000	keV	¹²³Ce	¹²³Pr > [ ? % , β+ , 8,815.0 keV ] > ¹²³Ce													?	%	¹¹⁸Sn	?	%	¹²²Te	?	%	¹²³Sb
Isotope_059_pr_124_u	Unstable	¹²⁴Pr	Fermion	59	p	65	n	?	0	123.942'960'000'0	u	~ 0	%	~ 0	-53.132'000'000'0	MeV	8.128'000'000'0	MeV	-		-		3.80E-8	year	1.200	seconds ( x⁰ )	100.000'000	%	β+	10,668.000	keV	¹²⁴Ce	¹²⁴Pr > [ 100 % , β+ , 10,668.0 keV ] > ¹²⁴Ce	β+p	?	keV	¹²³La	¹²⁴Pr > [ , β+p , ? keV ] > ¹²³La								?	%	¹²³Sb	?	%	¹²⁴Te
Isotope_059_pr_125_u	Unstable	¹²⁵Pr	Boson	59	p	66	n	3/2	1	124.937'830'000'0	u	~ 0	%	~ 0	-57.911'000'000'0	MeV	8.165'000'000'0	MeV	-		-		1.05E-7	year	3.300	seconds ( x⁰ )	100.000'000	%	β+	7,725.000	keV	¹²⁵Ce	¹²⁵Pr > [ 100 % , β+ , 7,725.0 keV ] > ¹²⁵Ce	β+p	?	keV	¹²⁴La	¹²⁵Pr > [ , β+p , ? keV ] > ¹²⁴La								100.000'000	%	¹²⁵Te	?	%	¹²⁴Te
Isotope_059_pr_126_u	Unstable	¹²⁶Pr	Fermion	59	p	67	n	?	0	125.935'310'000'0	u	~ 0	%	~ 0	-60.258'000'000'0	MeV	8.183'000'000'0	MeV	-		-		9.89E-8	year	3.120	seconds ( x⁰ )	100.000'000	%	β+	9,540.000	keV	¹²⁶Ce	¹²⁶Pr > [ 100 % , β+ , 9,540.0 keV ] > ¹²⁶Ce	β+p	?	keV	¹²⁵La	¹²⁶Pr > [ , β+p , ? keV ] > ¹²⁵La								?	%	¹²⁵Te	?	%	¹²⁵Te
Isotope_059_pr_127_u	Unstable	¹²⁷Pr	Boson	59	p	68	n	3/2	1	126.930'830'000'0	u	~ 0	%	~ 0	-64.431'000'000'0	MeV	8.215'000'000'0	MeV	-		-		1.33E-7	year	4.200	seconds ( x⁰ )	100.000'000	%	β+	6,522.000	keV	¹²⁷Ce	¹²⁷Pr > [ 100 % , β+ , 6,522.0 keV ] > ¹²⁷Ce													100.000'000	%	¹²⁷I
Isotope_059_pr_128_u	Unstable	¹²⁸Pr	Fermion	59	p	69	n	3	1	127.928'791'000'0	u	~ 0	%	~ 0	-66.330'757'000'0	MeV	8.228'913'000'0	MeV	-		-		9.00E-8	year	2.840	seconds ( x⁰ )	100.000'000	%	β+	8,181.000	keV	¹²⁸Ce	¹²⁸Pr > [ 100 % , β+ , 8,181.0 keV ] > ¹²⁸Ce	β+p	?	keV	¹²⁷La	¹²⁸Pr > [ , β+p , ? keV ] > ¹²⁷La								100.000'000	%	¹²⁸Xe	?	%	¹²⁷I
Isotope_059_pr_129_u	Unstable	¹²⁹Pr	Boson	59	p	70	n	3/2	1	128.925'095'000'0	u	~ 0	%	~ 0	-69.773'559'000'0	MeV	8.254'380'000'0	MeV	-		-		1.58E-8	year	500.000	milli-seconds ( x⁻³ )	100.000'000	%	β+	5,491.700	keV	¹²⁹Ce	¹²⁹Pr > [ 100 % , β+ , 5,491.7 keV ] > ¹²⁹Ce													100.000'000	%	¹²⁹Xe
Isotope_059_pr_130_u	Unstable	¹³⁰Pr	Fermion	59	p	71	n	?	1	129.923'590'000'0	u	~ 0	%	~ 0	-71.175'457'000'0	MeV	8.263'756'000'0	MeV	-		-		1.27E-6	year	40.020	seconds ( x⁰ )	100.000'000	%	β+	7,225.200	keV	¹³⁰Ce	¹³⁰Pr > [ 100 % , β+ , 7,225.2 keV ] > ¹³⁰Ce													?	%	¹³⁰Xe
Isotope_059_pr_131_u	Unstable	¹³¹Pr	Boson	59	p	72	n	3/2	1	130.920'259'000'0	u	~ 0	%	~ 0	-74.278'264'000'0	MeV	8.285'972'000'0	MeV	-		-		2.85E-6	year	90.000	seconds ( x⁰ )	100.000'000	%	β+	4,414.900	keV	¹³¹Ce	¹³¹Pr > [ 100 % , β+ , 4,414.9 keV ] > ¹³¹Ce													100.000'000	%	¹³¹Xe
Isotope_059_pr_132_u	Unstable	¹³²Pr	Fermion	59	p	73	n	2	1	131.919'255'000'0	u	~ 0	%	~ 0	-75.213'484'000'0	MeV	8.291'431'000'0	MeV	-		-		2.83E-6	year	89.400	seconds ( x⁰ )	100.000'000	%	β+	6,238.300	keV	¹³²Ce	¹³²Pr > [ 100 % , β+ , 6,238.3 keV ] > ¹³²Ce													?	%	¹³²Xe
Isotope_059_pr_133_u	Unstable	¹³³Pr	Boson	59	p	74	n	3/2	1	132.916'330'532'0	u	~ 0	%	~ 0	-77.937'607'000'0	MeV	8.310'258'000'0	MeV	-		-		1.24E-5	year	390.000	seconds ( x⁰ )	100.000'000	%	β+	3,463.400	keV	¹³³Ce	¹³³Pr > [ 100 % , β+ , 3,463.4 keV ] > ¹³³Ce													100.000'000	%	¹³³Cs
Isotope_059_pr_134_u	Unstable	¹³⁴Pr	Fermion	59	p	75	n	5	-1	133.915'711'737'0	u	~ 0	%	~ 0	-78.514'011'000'0	MeV	8.312'777'000'0	MeV	-		-		2.09E-5	year	660.000	seconds ( x⁰ )	100.000'000	%	β+	5,299.800	keV	¹³⁴Ce	¹³⁴Pr > [ 100 % , β+ , 5,299.8 keV ] > ¹³⁴Ce													100.000'000	%	¹³⁴Ba
Isotope_059_pr_135_u	Unstable	¹³⁵Pr	Boson	59	p	76	n	3/2	1	134.913'111'745'0	u	~ 0	%	~ 0	-80.935'888'000'0	MeV	8.328'928'000'0	MeV	-		-		4.43E-5	year	1.398	kilo-seconds ( x³ )	100.000'000	%	β+	2,666.800	keV	¹³⁵Ce	¹³⁵Pr > [ 100 % , β+ , 2,666.8 keV ] > ¹³⁵Ce													100.000'000	%	¹³⁵Ba
Isotope_059_pr_136_u	Unstable	¹³⁶Pr	Fermion	59	p	77	n	2	1	135.912'691'611'0	u	~ 0	%	~ 0	-81.327'241'000'0	MeV	8.329'911'000'0	MeV	-		-		2.49E-5	year	786.000	seconds ( x⁰ )	100.000'000	%	β+	4,118.900	keV	¹³⁶Ce	¹³⁶Pr > [ 100 % , β+ , 4,118.9 keV ] > ¹³⁶Ce													?	%	¹³⁶Ba
Isotope_059_pr_137_u	Unstable	¹³⁷Pr	Boson	59	p	78	n	5/2	1	136.910'705'455'0	u	~ 0	%	~ 0	-83.177'333'000'0	MeV	8.341'528'000'0	MeV	-		-		1.46E-4	year	4.610	kilo-seconds ( x³ )	100.000'000	%	β+	1,679.020	keV	¹³⁷Ce	¹³⁷Pr > [ 100 % , β+ , 1,679.02 keV ] > ¹³⁷Ce													100.000'000	%	¹³⁷Ba
Isotope_059_pr_138_u	Unstable	¹³⁸Pr	Fermion	59	p	79	n	1	1	137.910'754'636'0	u	~ 0	%	~ 0	-83.131'521'000'0	MeV	8.339'238'000'0	MeV	-		-		2.76E-6	year	87.000	seconds ( x⁰ )	100.000'000	%	β+	3,414.800	keV	¹³⁸Ce	¹³⁸Pr > [ 100 % , β+ , 3,414.8 keV ] > ¹³⁸Ce													?	%	¹³⁸Ba
Isotope_059_pr_139_u	Unstable	¹³⁹Pr	Boson	59	p	80	n	5/2	1	138.908'938'399'0	u	~ 0	%	~ 0	-84.823'335'000'0	MeV	8.349'482'000'0	MeV	-		-		5.04E-4	year	15.901	kilo-seconds ( x³ )	100.000'000	%	β+	1,106.960	keV	¹³⁹Ce	¹³⁹Pr > [ 100 % , β+ , 1,106.96 keV ] > ¹³⁹Ce													100.000'000	%	¹³⁹La
Isotope_059_pr_140_u	Unstable	¹⁴⁰Pr	Fermion	59	p	81	n	1	1	139.909'075'874'0	u	~ 0	%	~ 0	-84.695'278'000'0	MeV	8.346'580'000'0	MeV	-		-		6.43E-6	year	202.980	seconds ( x⁰ )	100.000'000	%	β+	2,365.800	keV	¹⁴⁰Ce	¹⁴⁰Pr > [ 100 % , β+ , 2,365.8 keV ] > ¹⁴⁰Ce													100.000'000	%	¹⁴⁰Ce
Isotope_059_pr_141_s	Stable	¹⁴¹Pr	Boson	59	p	82	n	5/2	1	140.907'652'769'0	u	100.000'000	%	140.907'652'769'0	-86.020'892'000'0	MeV	8.354'029'000'0	MeV	4.275'4.275'4.275'4.275	nm	-0.058'900'000'0	b	-
Isotope_059_pr_142_u	Unstable	¹⁴²Pr	Fermion	59	p	83	n	2	-1	141.910'044'806'0	u	~ 0	%	~ 0	-83.792'724'000'0	MeV	8.336'347'000'0	MeV	0.234'000'000'0	nm	0.029'700'000'0	b	2.18E-3	year	68.828	kilo-seconds ( x³ )	100.000'000	%	β-	2,162.470	keV	¹⁴²Nd	¹⁴²Pr > [ 100 % , β- , 2,162.47 keV ] > ¹⁴²Nd	ϵ	745.750	keV	¹⁴²Ce	¹⁴²Pr > [ , ϵ , 745.75 keV ] > ¹⁴²Ce								100.000'000	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_059_pr_143_u	Unstable	¹⁴³Pr	Boson	59	p	84	n	7/2	1	142.910'816'926'0	u	~ 0	%	~ 0	-83.073'499'000'0	MeV	8.329'464'000'0	MeV	-		-		3.71E-2	year	1.172	mega-seconds ( x⁶ )	100.000'000	%	β-	933.950	keV	¹⁴³Nd	¹⁴³Pr > [ 100 % , β- , 933.95 keV ] > ¹⁴³Nd													100.000'000	%	¹⁴³Nd
Isotope_059_pr_144_u	Unstable	¹⁴⁴Pr	Fermion	59	p	85	n	0	-1	143.913'305'245'0	u	~ 0	%	~ 0	-80.755'645'000'0	MeV	8.311'575'000'0	MeV	-		-		3.29E-5	year	1.037	kilo-seconds ( x³ )	100.000'000	%	β-	2,997.520	keV	¹⁴⁴Nd	¹⁴⁴Pr > [ 100 % , β- , 2,997.52 keV ] > ¹⁴⁴Nd													100.000'000	%	¹⁴⁰Ce
Isotope_059_pr_145_u	Unstable	¹⁴⁵Pr	Boson	59	p	86	n	7/2	1	144.914'511'700'0	u	~ 0	%	~ 0	-79.631'839'000'0	MeV	8.302'168'000'0	MeV	-		-		6.83E-4	year	21.540	kilo-seconds ( x³ )	100.000'000	%	β-	1,805.300	keV	¹⁴⁵Nd	¹⁴⁵Pr > [ 100 % , β- , 1,805.3 keV ] > ¹⁴⁵Nd													100.000'000	%	¹⁴⁵Nd
Isotope_059_pr_146_u	Unstable	¹⁴⁶Pr	Fermion	59	p	87	n	2	-1	145.917'644'336'0	u	~ 0	%	~ 0	-76.713'808'000'0	MeV	8.280'600'000'0	MeV	-		-		4.59E-5	year	1.449	kilo-seconds ( x³ )	100.000'000	%	β-	4,217.200	keV	¹⁴⁶Nd	¹⁴⁶Pr > [ 100 % , β- , 4,217.2 keV ] > ¹⁴⁶Nd													?	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_059_pr_147_u	Unstable	¹⁴⁷Pr	Boson	59	p	88	n	3/2	1	146.918'995'992'0	u	~ 0	%	~ 0	-75.454'748'000'0	MeV	8.270'612'000'0	MeV	-		-		2.55E-5	year	804.000	seconds ( x⁰ )	100.000'000	%	β-	2,697.200	keV	¹⁴⁷Nd	¹⁴⁷Pr > [ 100 % , β- , 2,697.2 keV ] > ¹⁴⁷Nd													100.000'000	%	¹⁴³Nd
Isotope_059_pr_148_u	Unstable	¹⁴⁸Pr	Fermion	59	p	89	n	1	-1	147.922'135'026'0	u	~ 0	%	~ 0	-72.530'756'000'0	MeV	8.249'508'000'0	MeV	-		-		4.34E-6	year	136.980	seconds ( x⁰ )	100.000'000	%	β-	4,882.600	keV	¹⁴⁸Nd	¹⁴⁸Pr > [ 100 % , β- , 4,882.6 keV ] > ¹⁴⁸Nd													?	%	¹⁴⁰Ce
Isotope_059_pr_149_u	Unstable	¹⁴⁹Pr	Boson	59	p	90	n	5/2	1	148.923'717'651'0	u	~ 0	%	~ 0	-71.056'550'000'0	MeV	8.238'418'000'0	MeV	-		-		4.31E-6	year	136.020	seconds ( x⁰ )	100.000'000	%	β-	3,324.300	keV	¹⁴⁹Nd	¹⁴⁹Pr > [ 100 % , β- , 3,324.3 keV ] > ¹⁴⁹Nd													?	%	¹⁴⁵Nd
Isotope_059_pr_150_u	Unstable	¹⁵⁰Pr	Fermion	59	p	91	n	1	-1	149.926'672'997'0	u	~ 0	%	~ 0	-68.303'663'000'0	MeV	8.218'952'000'0	MeV	-		-		1.96E-7	year	6.190	seconds ( x⁰ )	100.000'000	%	β-	5,386.000	keV	¹⁵⁰Nd	¹⁵⁰Pr > [ 100 % , β- , 5,386.0 keV ] > ¹⁵⁰Nd													100.000'000	%	¹⁵⁰Sm
Isotope_059_pr_151_u	Unstable	¹⁵¹Pr	Boson	59	p	92	n	3/2	-1	150.928'318'618'0	u	~ 0	%	~ 0	-66.770'777'000'0	MeV	8.208'8.208'8.208'8.208	MeV	-		-		5.99E-7	year	18.900	seconds ( x⁰ )	100.000'000	%	β-	4,182.100	keV	¹⁵¹Nd	¹⁵¹Pr > [ 100 % , β- , 4,182.1 keV ] > ¹⁵¹Nd													100.000'000	%	¹⁵¹Eu
Isotope_059_pr_152_u	Unstable	¹⁵²Pr	Fermion	59	p	93	n	4	1	151.931'499'225'0	u	~ 0	%	~ 0	-63.808'061'000'0	MeV	8.187'433'000'0	MeV	-		-		1.15E-7	year	3.630	seconds ( x⁰ )	100.000'000	%	β-	6,350.000	keV	¹⁵²Nd	¹⁵²Pr > [ 100 % , β- , 6,350.0 keV ] > ¹⁵²Nd													100.000'000	%	¹⁵²Sm
Isotope_059_pr_153_u	Unstable	¹⁵³Pr	Boson	59	p	94	n	5/2	1	152.933'838'905'0	u	~ 0	%	~ 0	-61.628'663'000'0	MeV	8.172'430'000'0	MeV	-		-		1.36E-7	year	4.280	seconds ( x⁰ )	100.000'000	%	β-	5,720.000	keV	¹⁵³Nd	¹⁵³Pr > [ 100 % , β- , 5,720.0 keV ] > ¹⁵³Nd													100.000'000	%	¹⁵³Sm
Isotope_059_pr_154_u	Unstable	¹⁵⁴Pr	Fermion	59	p	95	n	?	0	153.937'518'153'0	u	~ 0	%	~ 0	-58.201'466'000'0	MeV	8.149'519'000'0	MeV	-		-		7.29E-8	year	2.300	seconds ( x⁰ )	100.000'000	%	β-	7,490.000	keV	¹⁵⁴Nd	¹⁵⁴Pr > [ 100 % , β- , 7,490.0 keV ] > ¹⁵⁴Nd													?	%	¹⁵⁴Gd
Isotope_059_pr_155_u	Unstable	¹⁵⁵Pr	Boson	59	p	96	n	5/2	-1	154.940'120'000'0	u	~ 0	%	~ 0	-55.778'000'000'0	MeV	8.133'8.133'8.133'8.133	MeV	-		-		3.17E-8	year	1,000.000	milliseconds ( x⁻³ )	?	%	β-	6,695.000	keV	¹⁵⁵Nd	¹⁵⁵Pr > [ ? % , β- , 6,695.0 keV ] > ¹⁵⁵Nd													?	%	¹⁵⁵Gd
Isotope_059_pr_156_u	Unstable	¹⁵⁶Pr	Fermion	59	p	97	n	?	0	155.944'270'000'0	u	~ 0	%	~ 0	-51.912'000'000'0	MeV	8.108'000'000'0	MeV	-		-		1.58E-8	year	500.000	milli-seconds ( x⁻³ )	?	%	β-	8,618.000	keV	¹⁵⁶Nd	¹⁵⁶Pr > [ ? % , β- , 8,618.0 keV ] > ¹⁵⁶Nd													?	%	¹⁵⁶Gd
Isotope_059_pr_157_u	Unstable	¹⁵⁷Pr	Boson	59	p	98	n	5/2	-1	156.947'430'000'0	u	~ 0	%	~ 0	-48.969'000'000'0	MeV	8.089'000'000'0	MeV	-		-		9.51E-9	year	300.000	milli-seconds ( x⁻³ )	?	%	β-	7,825.000	keV	¹⁵⁷Nd	¹⁵⁷Pr > [ ? % , β- , 7,825.0 keV ] > ¹⁵⁷Nd													?	%	¹⁵⁷Gd
Isotope_059_pr_158_u	Unstable	¹⁵⁸Pr	Fermion	59	p	99	n	?	0	157.951'980'000'0	u	~ 0	%	~ 0	-44.730'000'000'0	MeV	8.062'8.062'8.062'8.062	MeV	-		-		6.34E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β-	9,669.000	keV	¹⁵⁸Nd	¹⁵⁸Pr > [ ? % , β- , 9,669.0 keV ] > ¹⁵⁸Nd													?	%	¹⁵⁸Gd
Isotope_059_pr_159_u	Unstable	¹⁵⁹Pr	Boson	59	p	100	n	5/2	-1	158.955'500'000'0	u	~ 0	%	~ 0	-41.451'000'000'0	MeV	8.042'000'000'0	MeV	-		-		3.17E-9	year	100.000	milli-seconds ( x⁻³ )	?	%	β-	8,765.000	keV	¹⁵⁹Nd	¹⁵⁹Pr > [ ? % , β- , 8,765.0 keV ] > ¹⁵⁹Nd													?	%	¹⁵⁹Tb

CENTRALDATACORE

CLOSE SECTION