61 – Promethium, Pm

PERIODIC TABLE

Spectrograph
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Elemental Tile
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Promethium from Uraninite
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Promethium isotopes are radioactive; it is one of only two such elements that are followed in the periodic table by elements with stable forms, a distinction shared with technetium.

1945 by Jacob A. Marinsky, Lawrence Glendenin and Charles D. Coryell, USA.

DISCOVERY

From the name of Titan in Greek mythology who stole fire from Mount Olympus and brought it down to humans, to symbolize 'both the daring and the possible misuse of mankind’s intellect'.

ETYMOLOGY

Promethium

Element

Pm

Symbol

61 Atomic Number

Lanthanide

Classification

7440-12-2

CAS Number

Silver

Elemental Colour

-

Refractive Index

0.280 Poisson Ratio

19.398 cm³

Molar Volume

-

Brinell Hardness

-

Mohs Hardness

-

Vickers Hardness

-

Speed of Sound

33.00G Pa, 325.684'7k Atm

325.684'7k Atm

Bulk Modulus

18.00G Pa, 177.646'2k Atm

177.646'2k Atm

Shear Modulus

46.00G Pa, 453.984'7k Atm

453.984'7k Atm

Young Modulus

Allotropes

1,373.15 K, 1,100.00 °C

1,100.00 °C

Melting Point

3,273.15 K, 3,000.00 °C

3,000.00 °C

Boiling Point

-

Automatic Ignition

-

Flashpoint

-

Critical Temperature

-

Critical Pressure

15.000'000 W/(m K)

Thermal Conductivity

0.000'011'0 K^-1

Thermal Expansion

-

Specific Heat

7.700 kJ/mol

Heat Fusion

290.000 kJ/mol

Heat Vaporisation

-

Heat Combustion

-

Curie Point

-

Neel Point

-

Adiabatic Index

Solid

Phase

Conductor

Electrical Type

1.30M S/m

Conductivity

750.00n Ω.m

Resistivity

-

Superconducting Point

-

Magnetic Type

-

Mass Susceptibility

-

Molar Susceptibility

-

Volume Susceptibility

Material Composition

-

Universe

-

Meteorites

-

Sun

-

Earth Crust

-

Oceans

-

Humans

140.907'000'0

Atomic Weight

205 pm

Atomic Radius

173 pm

Covalent Radius Single Bond

135 pm

Covalent Radius Double Bond

-

Covalent Radius Triple Bond

236 pm

Van der Waals Radius

[Xe]6s²4f⁵

Electron Configuration

Hexagonal, Close Packed Double

Crystal Structure

7.264'00 g/cm³

Density as Solid

-

Density as Liquid

-

Density as Gas

-

Space Group Name

-

Space Group Number

-

Lattice Angles

-

Lattice Constants

3 Valence

-

Electronegativity

12.45 kJ/mol

Electron Affinity

Ionisation Energy

17.73 years

Half Life

25.56 years

Lifetime

4f⁵ = 4, 3, +1, +1/2

Quantum Numbers

21.300'00 b σ_s

Neutron Cross Section

168.400'00 b σ_a

Neutron Mass Absorption

Stable Isotopes

NONE

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	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
Isotope_061_pm_126_u	Unstable	¹²⁶Pm	Fermion	61	p	65	n	?	0	144.912'749'023'0	u	~ 0	%	~ 0	-39.570'000'000'0	MeV	8.007'000'000'0	MeV	-		-		1.58E-8	year	500.000	milli-seconds ( x⁻³ )	?	%	β+	12,298.000	keV	¹²⁶Nd	¹²⁶Pm > [ ? % , β+ , 12,298.0 keV ] > ¹²⁶Nd													?	%	¹²⁵Te	?	%	¹²⁶Te
Isotope_061_pm_127_u	Unstable	¹²⁷Pm	Boson	61	p	66	n	5/2	1	126.951'630'000'0	u	~ 0	%	~ 0	-45.056'000'000'0	MeV	8.050'000'000'0	MeV	-		-		3.17E-8	year	1,000.000	milliseconds ( x⁻³ )	?	%	β+	9,346.000	keV	¹²⁷Nd	¹²⁷Pm > [ ? % , β+ , 9,346.0 keV ] > ¹²⁷Nd	p	545.000	keV	¹²⁶Nd	¹²⁷Pm > [ , p , 545.0 keV ] > ¹²⁶Nd								?	%	¹²⁵Te	?	%	¹²⁷I	?	%	¹²⁶Te
Isotope_061_pm_128_u	Unstable	¹²⁸Pm	Fermion	61	p	67	n	6	1	127.948'420'000'0	u	~ 0	%	~ 0	-48.046'000'000'0	MeV	8.074'000'000'0	MeV	-		-		3.17E-8	year	1,000.000	milliseconds ( x⁻³ )	100.000'000	%	β+	11,115.000	keV	¹²⁸Nd	¹²⁸Pm > [ 100 % , β+ , 11,115.0 keV ] > ¹²⁸Nd	p	88.000	keV	¹²⁷Nd	¹²⁸Pm > [ , p , 88.0 keV ] > ¹²⁷Nd	?	%	β+p	?	keV	¹²⁷Pr	¹²⁸Pm > [ ? % , β+p , ? keV ] > ¹²⁷Pr	?	%	¹²⁸Xe	?	%	¹²⁷I	?	%	¹²⁶Te
Isotope_061_pm_129_u	Unstable	¹²⁹Pm	Boson	61	p	68	n	5/2	1	128.943'160'000'0	u	~ 0	%	~ 0	-52.946'000'000'0	MeV	8.112'000'000'0	MeV	-		-		9.51E-8	year	3.000	seconds ( x⁰ )	?	%	β+	8,267.000	keV	¹²⁹Nd	¹²⁹Pm > [ ? % , β+ , 8,267.0 keV ] > ¹²⁹Nd													?	%	¹²⁹Xe	?	%	¹²⁸Xe
Isotope_061_pm_130_u	Unstable	¹³⁰Pm	Fermion	61	p	69	n	?	0	129.940'450'000'0	u	~ 0	%	~ 0	-55.470'000'000'0	MeV	8.131'000'000'0	MeV	-		-		8.24E-8	year	2.600	seconds ( x⁰ )	100.000'000	%	β+	10,104.000	keV	¹³⁰Nd	¹³⁰Pm > [ 100 % , β+ , 10,104.0 keV ] > ¹³⁰Nd	β+p	?	keV	¹²⁹Pr	¹³⁰Pm > [ , β+p , ? keV ] > ¹²⁹Pr								?	%	¹²⁹Xe	?	%	¹³⁰Xe
Isotope_061_pm_131_u	Unstable	¹³¹Pm	Boson	61	p	70	n	5/2	1	130.935'870'000'0	u	~ 0	%	~ 0	-59.737'000'000'0	MeV	8.163'000'000'0	MeV	-		-		2.00E-7	year	6.300	seconds ( x⁰ )	100.000'000	%	β+	7,010.000	keV	¹³¹Nd	¹³¹Pm > [ 100 % , β+ , 7,010.0 keV ] > ¹³¹Nd	β+p	?	keV	¹³⁰Pr	¹³¹Pm > [ , β+p , ? keV ] > ¹³⁰Pr
Isotope_061_pm_132_u	Unstable	¹³²Pm	Fermion	61	p	71	n	3	1	131.933'750'000'0	u	~ 0	%	~ 0	-61.711'000'000'0	MeV	8.177'000'000'0	MeV	-		-		2.00E-7	year	6.300	seconds ( x⁰ )	100.000'000	%	β+	8,692.000	keV	¹³²Nd	¹³²Pm > [ 100 % , β+ , 8,692.0 keV ] > ¹³²Nd	β+p	?	keV	¹³¹Pr	¹³²Pm > [ , β+p , ? keV ] > ¹³¹Pr								0.000'050	%	¹³¹Xe	?	%	¹³²Xe
Isotope_061_pm_133_u	Unstable	¹³³Pm	Boson	61	p	72	n	3/2	1	132.929'782'000'0	u	~ 0	%	~ 0	-65.407'646'000'0	MeV	8.204'283'000'0	MeV	-		-		4.75E-7	year	15.000	seconds ( x⁰ )	100.000'000	%	β+	5,902.500	keV	¹³³Nd	¹³³Pm > [ 100 % , β+ , 5,902.5 keV ] > ¹³³Nd													100.000'000	%	¹³³Cs
Isotope_061_pm_134_u	Unstable	¹³⁴Pm	Fermion	61	p	73	n	5	1	133.928'353'000'0	u	~ 0	%	~ 0	-66.738'751'000'0	MeV	8.213'225'000'0	MeV	-		-		6.97E-7	year	22.000	seconds ( x⁰ )	100.000'000	%	β+	7,885.500	keV	¹³⁴Nd	¹³⁴Pm > [ 100 % , β+ , 7,885.5 keV ] > ¹³⁴Nd													100.000'000	%	¹³⁴Ba
Isotope_061_pm_135_u	Unstable	¹³⁵Pm	Boson	61	p	74	n	?	0	134.924'876'000'0	u	~ 0	%	~ 0	-69.977'556'000'0	MeV	8.236'165'000'0	MeV	-		-		1.55E-6	year	49.020	seconds ( x⁰ )	100.000'000	%	β+	5,214.000	keV	¹³⁵Nd	¹³⁵Pm > [ 100 % , β+ , 5,214.0 keV ] > ¹³⁵Nd													100.000'000	%	¹³⁵Ba
Isotope_061_pm_136_u	Unstable	¹³⁶Pm	Fermion	61	p	75	n	5	-1	135.923'565'829'0	u	~ 0	%	~ 0	-71.197'972'000'0	MeV	8.243'926'000'0	MeV	-		-		3.39E-6	year	106.980	seconds ( x⁰ )	100.000'000	%	β+	6,979.100	keV	¹³⁶Nd	¹³⁶Pm > [ 100 % , β+ , 6,979.1 keV ] > ¹³⁶Nd													?	%	¹³⁶Ba
Isotope_061_pm_137_u	Unstable	¹³⁷Pm	Boson	61	p	76	n	5/2	1	136.920'479'493'0	u	~ 0	%	~ 0	-74.072'875'000'0	MeV	8.263'651'000'0	MeV	-		-		3.18E-6	year	100.200	seconds ( x⁰ )	?	%	β+	4,485.100	keV	¹³⁷Nd	¹³⁷Pm > [ ? % , β+ , 4,485.1 keV ] > ¹³⁷Nd													?	%	¹³⁷Ba
Isotope_061_pm_138_u	Unstable	¹³⁸Pm	Fermion	61	p	77	n	1	1	137.919'548'281'0	u	~ 0	%	~ 0	-74.940'294'000'0	MeV	8.268'543'000'0	MeV	-		-		3.17E-7	year	10.000	seconds ( x⁰ )	100.000'000	%	β+	6,055.500	keV	¹³⁸Nd	¹³⁸Pm > [ 100 % , β+ , 6,055.5 keV ] > ¹³⁸Nd													?	%	¹³⁸Ba
Isotope_061_pm_139_u	Unstable	¹³⁹Pm	Boson	61	p	78	n	5/2	1	138.916'804'082'0	u	~ 0	%	~ 0	-77.496'499'000'0	MeV	8.285'514'000'0	MeV	-		-		7.89E-6	year	249.000	seconds ( x⁰ )	100.000'000	%	β+	3,473.000	keV	¹³⁹Nd	¹³⁹Pm > [ 100 % , β+ , 3,473.0 keV ] > ¹³⁹Nd													100.000'000	%	¹³⁹La
Isotope_061_pm_140_u	Unstable	¹⁴⁰Pm	Fermion	61	p	79	n	1	1	139.916'041'789'0	u	~ 0	%	~ 0	-78.206'570'000'0	MeV	8.289'056'000'0	MeV	-		-		2.92E-7	year	9.200	seconds ( x⁰ )	100.000'000	%	β+	5,023.000	keV	¹⁴⁰Nd	¹⁴⁰Pm > [ 100 % , β+ , 5,023.0 keV ] > ¹⁴⁰Nd													100.000'000	%	¹⁴⁰Ce
Isotope_061_pm_141_u	Unstable	¹⁴¹Pm	Boson	61	p	80	n	5/2	1	140.913'555'054'0	u	~ 0	%	~ 0	-80.522'949'000'0	MeV	8.303'940'000'0	MeV	-		-		3.96E-5	year	1.250	kilo-seconds ( x³ )	100.000'000	%	β+	2,652.700	keV	¹⁴¹Nd	¹⁴¹Pm > [ 100 % , β+ , 2,652.7 keV ] > ¹⁴¹Nd													100.000'000	%	¹⁴¹Pr
Isotope_061_pm_142_u	Unstable	¹⁴²Pm	Fermion	61	p	81	n	1	1	141.912'874'471'0	u	~ 0	%	~ 0	-81.156'907'000'0	MeV	8.307'8.307'8.307'8.307	MeV	-		-		1.28E-6	year	40.500	seconds ( x⁰ )	100.000'000	%	β+	3,776.100	keV	¹⁴²Nd	¹⁴²Pm > [ 100 % , β+ , 3,776.1 keV ] > ¹⁴²Nd													100.000'000	%	¹⁴²Nd
Isotope_061_pm_143_u	Unstable	¹⁴³Pm	Boson	61	p	82	n	5/2	1	142.910'932'616'0	u	~ 0	%	~ 0	-82.965'734'000'0	MeV	8.317'769'000'0	MeV	3.800'000'000'0	nm	-		7.26E-1	year	22.896	mega-seconds ( x⁶ )	100.000'000	%	β+	1,041.710	keV	¹⁴³Nd	¹⁴³Pm > [ 100 % , β+ , 1,041.71 keV ] > ¹⁴³Nd	e+	?	keV	¹⁴³Nd	¹⁴³Pm > [ , e+ , ? keV ] > ¹⁴³Nd								100.000'006	%	¹⁴³Nd
Isotope_061_pm_144_u	Unstable	¹⁴⁴Pm	Fermion	61	p	83	n	5	-1	143.912'590'843'0	u	~ 0	%	~ 0	-81.421'106'000'0	MeV	8.305'331'000'0	MeV	1.690'000'000'0	nm	-		9.96E-1	year	31.422	mega-seconds ( x⁶ )	100.000'000	%	ϵ	2,332.060	keV	¹⁴⁴Nd	¹⁴⁴Pm > [ 100 % , ϵ , 2,332.06 keV ] > ¹⁴⁴Nd	e+	?	keV	¹⁴⁴Nd	¹⁴⁴Pm > [ , e+ , ? keV ] > ¹⁴⁴Nd								100.000'000	%	¹⁴⁰Ce
Isotope_061_pm_145_u	Unstable	¹⁴⁵Pm	Boson	61	p	84	n	5/2	1	144.912'749'023'0	u	~ 0	%	~ 0	-81.273'762'000'0	MeV	8.302'701'000'0	MeV	-		-		1.77E+1	years	559.516	mega-seconds ( x⁶ )	100.000'000	%	ϵ	163.370	keV	¹⁴⁵Nd	¹⁴⁵Pm > [ 100 % , ϵ , 163.37 keV ] > ¹⁴⁵Nd	α	2,322.210	keV	¹⁴¹Pr	¹⁴⁵Pm > [ , α , 2,322.21 keV ] > ¹⁴¹Pr								100.000'000	%	¹⁴⁵Nd	0.000'000	%	¹⁴¹Pr
Isotope_061_pm_146_u	Unstable	¹⁴⁶Pm	Fermion	61	p	85	n	3	-1	145.914'696'305'0	u	~ 0	%	~ 0	-79.459'880'000'0	MeV	8.288'692'000'0	MeV	-		-		5.55E+0	years	175.113	mega-seconds ( x⁶ )	66.000'000	%	ϵ	1,471.170	keV	¹⁴⁶Nd	¹⁴⁶Pm > [ 66 % , ϵ , 1,471.17 keV ] > ¹⁴⁶Nd	β-	1,542.000	keV	¹⁴⁶Sm	¹⁴⁶Pm > [ , β- , 1,542.0 keV ] > ¹⁴⁶Sm								34.000'000	%	¹⁴²Nd	?	%	¹³⁸Ba
Isotope_061_pm_147_u	Unstable	¹⁴⁷Pm	Boson	61	p	86	n	7/2	1	146.915'138'545'0	u	~ 0	%	~ 0	-79.047'936'000'0	MeV	8.284'411'000'0	MeV	2.580'000'000'0	nm	0.740'000'000'0	b	2.63E+0	years	82.843	mega-seconds ( x⁶ )	100.000'000	%	β-	224.139	keV	¹⁴⁷Sm	¹⁴⁷Pm > [ 100 % , β- , 224.139 keV ] > ¹⁴⁷Sm													100.000'000	%	¹⁴³Nd
Isotope_061_pm_148_u	Unstable	¹⁴⁸Pm	Fermion	61	p	87	n	1	-1	147.917'474'618'0	u	~ 0	%	~ 0	-76.871'898'000'0	MeV	8.268'268'000'0	MeV	2.080'000'000'0	nm	0.200'000'000'0	b	1.47E-2	year	463.804	kilo-seconds ( x³ )	100.000'000	%	β-	2,470.270	keV	¹⁴⁸Sm	¹⁴⁸Pm > [ 100 % , β- , 2,470.27 keV ] > ¹⁴⁸Sm													100.000'000	%	¹⁴⁰Ce
Isotope_061_pm_149_u	Unstable	¹⁴⁹Pm	Boson	61	p	88	n	7/2	1	148.918'334'155'0	u	~ 0	%	~ 0	-76.071'245'000'0	MeV	8.261'573'000'0	MeV	3.300'000'000'0	nm	-		6.06E-3	year	191.100	kilo-seconds ( x³ )	100.000'000	%	β-	1,070.680	keV	¹⁴⁹Sm	¹⁴⁹Pm > [ 100 % , β- , 1,070.68 keV ] > ¹⁴⁹Sm													?	%	¹⁴⁵Nd
Isotope_061_pm_150_u	Unstable	¹⁵⁰Pm	Fermion	61	p	89	n	1	-1	149.920'983'561'0	u	~ 0	%	~ 0	-73.603'339'000'0	MeV	8.243'852'000'0	MeV	-		-		3.06E-4	year	9.650	kilo-seconds ( x³ )	100.000'000	%	β-	3,454.000	keV	¹⁵⁰Sm	¹⁵⁰Pm > [ 100 % , β- , 3,454.0 keV ] > ¹⁵⁰Sm													100.000'000	%	¹⁵⁰Sm
Isotope_061_pm_151_u	Unstable	¹⁵¹Pm	Boson	61	p	90	n	5/2	1	150.921'206'973'0	u	~ 0	%	~ 0	-73.395'232'000'0	MeV	8.241'331'000'0	MeV	1.800'000'000'0	nm	1.900'000'000'0	b	3.23E-3	year	102.038	kilo-seconds ( x³ )	100.000'000	%	β-	1,187.250	keV	¹⁵¹Sm	¹⁵¹Pm > [ 100 % , β- , 1,187.25 keV ] > ¹⁵¹Sm													100.000'000	%	¹⁵¹Eu
Isotope_061_pm_152_u	Unstable	¹⁵²Pm	Fermion	61	p	91	n	1	1	151.923'496'795'0	u	~ 0	%	~ 0	-71.262'276'000'0	MeV	8.226'180'000'0	MeV	-		-		7.83E-6	year	247.020	seconds ( x⁰ )	100.000'000	%	β-	3,506.500	keV	¹⁵²Sm	¹⁵²Pm > [ 100 % , β- , 3,506.5 keV ] > ¹⁵²Sm													100.000'000	%	¹⁵²Sm
Isotope_061_pm_153_u	Unstable	¹⁵³Pm	Boson	61	p	92	n	5/2	-1	152.924'116'889'0	u	~ 0	%	~ 0	-70.684'663'000'0	MeV	8.221'392'000'0	MeV	-		-		9.98E-6	year	315.000	seconds ( x⁰ )	100.000'000	%	β-	1,881.200	keV	¹⁵³Sm	¹⁵³Pm > [ 100 % , β- , 1,881.2 keV ] > ¹⁵³Sm													100.000'000	%	¹⁵²Eu
Isotope_061_pm_154_u	Unstable	¹⁵⁴Pm	Fermion	61	p	93	n	?	0	153.926'463'943'0	u	~ 0	%	~ 0	-68.498'396'000'0	MeV	8.206'221'000'0	MeV	-		-		3.29E-6	year	103.980	seconds ( x⁰ )	100.000'000	%	β-	3,963.200	keV	¹⁵⁴Sm	¹⁵⁴Pm > [ 100 % , β- , 3,963.2 keV ] > ¹⁵⁴Sm													?	%	¹⁵⁴Gd
Isotope_061_pm_155_u	Unstable	¹⁵⁵Pm	Boson	61	p	94	n	5/2	-1	154.928'101'267'0	u	~ 0	%	~ 0	-66.973'239'000'0	MeV	8.196'8.196'8.196'8.196	MeV	-		-		1.32E-6	year	41.500	seconds ( x⁰ )	100.000'000	%	β-	3,224.000	keV	¹⁵⁵Sm	¹⁵⁵Pm > [ 100 % , β- , 3,224.0 keV ] > ¹⁵⁵Sm													100.000'000	%	¹⁵⁵Gd
Isotope_061_pm_156_u	Unstable	¹⁵⁶Pm	Fermion	61	p	95	n	4	-1	155.931'056'736'0	u	~ 0	%	~ 0	-64.220'237'000'0	MeV	8.177'068'000'0	MeV	-		-		8.46E-7	year	26.700	seconds ( x⁰ )	100.000'000	%	β-	5,150.100	keV	¹⁵⁶Sm	¹⁵⁶Pm > [ 100 % , β- , 5,150.1 keV ] > ¹⁵⁶Sm													100.000'000	%	¹⁵⁶Gd
Isotope_061_pm_157_u	Unstable	¹⁵⁷Pm	Boson	61	p	96	n	5/2	-1	156.933'039'369'0	u	~ 0	%	~ 0	-62.373'426'000'0	MeV	8.164'631'000'0	MeV	-		-		3.35E-7	year	10.560	seconds ( x⁰ )	100.000'000	%	β-	4,360.000	keV	¹⁵⁷Sm	¹⁵⁷Pm > [ 100 % , β- , 4,360.0 keV ] > ¹⁵⁷Sm													100.000'000	%	¹⁵⁷Gd
Isotope_061_pm_158_u	Unstable	¹⁵⁸Pm	Fermion	61	p	97	n	?	0	157.936'561'407'0	u	~ 0	%	~ 0	-59.092'669'000'0	MeV	8.143'276'000'0	MeV	-		-		1.52E-7	year	4.800	seconds ( x⁰ )	100.000'000	%	β-	6,120.000	keV	¹⁵⁸Sm	¹⁵⁸Pm > [ 100 % , β- , 6,120.0 keV ] > ¹⁵⁸Sm													100.000'000	%	¹⁵⁸Gd
Isotope_061_pm_159_u	Unstable	¹⁵⁹Pm	Boson	61	p	98	n	5/2	-1	158.938'970'000'0	u	~ 0	%	~ 0	-56.849'000'000'0	MeV	8.129'000'000'0	MeV	-		-		4.66E-8	year	1.470	seconds ( x⁰ )	100.000'000	%	β-	5,346.000	keV	¹⁵⁹Sm	¹⁵⁹Pm > [ 100 % , β- , 5,346.0 keV ] > ¹⁵⁹Sm													100.000'000	%	¹⁵⁹Tb
Isotope_061_pm_160_u	Unstable	¹⁶⁰Pm	Fermion	61	p	99	n	?	0	159.942'990'000'0	u	~ 0	%	~ 0	-53.104'000'000'0	MeV	8.105'8.105'8.105'8.105	MeV	-		-		6.34E-8	year	2.000	seconds ( x⁰ )	?	%	β-	7,312.000	keV	¹⁶⁰Sm	¹⁶⁰Pm > [ ? % , β- , 7,312.0 keV ] > ¹⁶⁰Sm													?	%	¹⁶⁰Dy
Isotope_061_pm_161_u	Unstable	¹⁶¹Pm	Boson	61	p	100	n	5/2	-1	160.945'860'000'0	u	~ 0	%	~ 0	-50.431'000'000'0	MeV	8.088'000'000'0	MeV	-		-		2.22E-8	year	700.000	milli-seconds ( x⁻³ )	?	%	β-	6,548.000	keV	¹⁶¹Sm	¹⁶¹Pm > [ ? % , β- , 6,548.0 keV ] > ¹⁶¹Sm													?	%	¹⁶¹Dy
Isotope_061_pm_162_u	Unstable	¹⁶²Pm	Fermion	61	p	101	n	?	0	161.950'290'000'0	u	~ 0	%	~ 0	-46.305'000'000'0	MeV	8.063'000'000'0	MeV	-		-		1.58E-8	year	500.000	milli-seconds ( x⁻³ )	?	%	β-	8,449.000	keV	¹⁶²Sm	¹⁶²Pm > [ ? % , β- , 8,449.0 keV ] > ¹⁶²Sm													?	%	¹⁶²Dy
Isotope_061_pm_163_u	Unstable	¹⁶³Pm	Boson	61	p	102	n	5/2	-1	162.953'680'000'0	u	~ 0	%	~ 0	-43.147'000'000'0	MeV	8.043'8.043'8.043'8.043	MeV	-		-		6.34E-9	year	200.000	milli-seconds ( x⁻³ )	?	%	β-	7,750.000	keV	¹⁶³Sm	¹⁶³Pm > [ ? % , β- , 7,750.0 keV ] > ¹⁶³Sm													?	%	¹⁶³Dy

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