Prometium (Pm)

chemical element with the atomic number of 61

Atomic Number	61
Atomic Weight	144.91276
Nombor jisim	126

Group
Period	6
Block	f

proton	61 p⁺
neutron	65 n⁰
Elektron	61 e^-

Sifat Fizikal

Jejari Atom	185 pm 283 pm
molar volume
Jejari kovalen	173 pm 135 pm 199 pm
Metallic Radius
ionic radius	97 pm 109.3 pm 114.4 pm
Crystal Radius	111 pm 123.3 pm 128.4 pm
Jejari van der Waals	238 pm 272 pm 354.7 pm
ketumpatan	7.26 g/cm³

Sifat Kimia

{ERROR}

tenaga

proton affinity
Pertalian elektron
ionization energy	5.582 eV/particle 10.9 eV/particle 22 eV/particle 41 eV/particle 61.69 eV/particle 85 eV/particle 101 eV/particle 116 eV/particle 138 eV/particle 155 eV/particle 174 eV/particle 202 eV/particle 229 eV/particle 200 eV/particle 269 eV/particle 430 eV/particle 462 eV/particle 497 eV/particle 534 eV/particle 569 eV/particle 609 eV/particle 651 eV/particle 689 eV/particle 730 eV/particle 767 eV/particle 916 eV/particle 956 eV/particle 998 eV/particle 1,040 eV/particle 1,113 eV/particle 1,158 eV/particle 1,261 eV/particle 1,308.7 eV/particle 2,251 eV/particle 2,344 eV/particle 2,443 eV/particle 2,549 eV/particle 2,652 eV/particle 2,755 eV/particle 2,892 eV/particle 2,997 eV/particle 3,110 eV/particle 3,219 eV/particle 3,519 eV/particle 3,613 eV/particle 3,718 eV/particle 3,816 eV/particle 4,056 eV/particle 4,166 eV/particle 4,371 eV/particle 4,476 eV/particle 10,115 eV/particle 10,378 eV/particle 10,671 eV/particle 10,942 eV/particle 11,819 eV/particle 12,136 eV/particle 12,532 eV/particle 12,797.26 eV/particle 52,144.29 eV/particle 53,346.1 eV/particle

Entalpi pengewapan
entalpi pelakuran
standard enthalpy of formation
Elektron

Petala elektron	2, 8, 18, 23, 8, 2

Elektron valens	2 ⓘ

tatarajah elektron	[Xe] 4f⁵ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f⁵ 6s²

Keadaan pengoksidaan	2, 3
Keelektronegatifan	0.1810032
Electrophilicity Index
keadaan jirim asas

fasa jirim
gaseous state of matter
Boiling Point
Melting Point	1,315.15 K
critical pressure
critical temperature
triple point
rupa
warna	Black #ff1493 #a3ffc7 #a3ffc7
rupa	metallic
indeks biasan
sifat bahan
Thermal Conductivity	17.9 W/(m K)
Pengembangan terma	0.000011 1/K
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
type	Conductor
Kekonduksian elektrik	1.3 MS/m
Kerintangan dan kekonduksian elektrik	0.00000075 Ω*m
Kesuperkonduksian
kemagnetan
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Suhu Curie
Néel temperature
struktur
Crystal Structure	{ERROR}
lattice constant
Lattice Angles
mechanical property
hardness
Modulus pukal	33 GPa
shear modulus	18 GPa
Young's modulus	46 GPa
Nisbah Poisson	0.28
Kelajuan bunyi
pengelasan
Category	Actinides, Lanthanides
CAS Group
IUPAC Group
Glawe Number	28
Mendeleev Number	21
Pettifor Number	29
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

other

Gas Basicity
polarizability	200 ± 20 a₀
C6 Dispersion Coefficient	3,340 a₀
allotrope
Neutron cross section	8,400
Neutron Mass Absorption
Nombor kuantum	6H5/2
space group	()

Isotopes of Promethium

Stable Isotopes	0
Unstable Isotopes	40
Natural Isotopes	0

¹²⁶Pm

Nombor jisim	126
nombor neutron	65
Jisim Atom Relatif	125.957327 ± 0.000537 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)

¹²⁷Pm

Nombor jisim	127
nombor neutron	66
Jisim Atom Relatif	126.951358 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	3/2
nuclear quadrupole moment
tarikh penemuan
parity	+

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

¹²⁸Pm

Nombor jisim	128
nombor neutron	67
Jisim Atom Relatif	127.948234 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1 ± 0.3 s
Spin	4
nuclear quadrupole moment
tarikh penemuan	1999
parity	+

decay mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)
p (proton emission)	0%

¹²⁹Pm

Nombor jisim	129
nombor neutron	68
Jisim Atom Relatif	128.942909 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.4 ± 0.9 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	2004
parity	+

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

¹³⁰Pm

Nombor jisim	130
nombor neutron	69
Jisim Atom Relatif	129.940451 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.6 ± 0.2 s
Spin	5
nuclear quadrupole moment
tarikh penemuan	1985
parity	+

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

¹³¹Pm

Nombor jisim	131
nombor neutron	70
Jisim Atom Relatif	130.935834 ± 0.000215 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	6.3 ± 0.8 s
Spin	11/2
nuclear quadrupole moment
tarikh penemuan	1998
parity	-

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

¹³²Pm

Nombor jisim	132
nombor neutron	71
Jisim Atom Relatif	131.93384 ± 0.00016 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	6.2 ± 0.6 s
Spin	3
nuclear quadrupole moment
tarikh penemuan	1977
parity	+

decay mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
β⁺ p (β⁺-delayed proton emission)	5%

¹³³Pm

Nombor jisim	133
nombor neutron	72
Jisim Atom Relatif	132.929782 ± 0.000054 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	13.5 ± 2.1 s
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1977
parity	+

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

¹³⁴Pm

Nombor jisim	134
nombor neutron	73
Jisim Atom Relatif	133.928326 ± 0.000045 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	22 ± 1 s
Spin	5
nuclear quadrupole moment
tarikh penemuan	1977
parity	+

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

¹³⁵Pm

Nombor jisim	135
nombor neutron	74
Jisim Atom Relatif	134.924785 ± 0.000089 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	49 ± 3 s
Spin	3/2
nuclear quadrupole moment
tarikh penemuan	1975
parity	+

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

¹³⁶Pm

Nombor jisim	136
nombor neutron	75
Jisim Atom Relatif	135.923595949 ± 0.000074152 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	107 ± 6 s
Spin	7
nuclear quadrupole moment
tarikh penemuan	1988
parity	+

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

¹³⁷Pm

Nombor jisim	137
nombor neutron	76
Jisim Atom Relatif	136.920479519 ± 0.000014 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1975
parity	-

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

¹³⁸Pm

Nombor jisim	138
nombor neutron	77
Jisim Atom Relatif	137.919576119 ± 0.000012456 Da
g-factor	1.0666666666667 ± 0.3
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	3.24 ± 0.05 m
Spin	3
nuclear quadrupole moment
tarikh penemuan	1973
parity	-

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

¹³⁹Pm

Nombor jisim	139
nombor neutron	78
Jisim Atom Relatif	138.916799228 ± 0.000014587 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	4.15 ± 0.05 m
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1967
parity

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

¹⁴⁰Pm

Nombor jisim	140
nombor neutron	79
Jisim Atom Relatif	139.916035918 ± 0.000026001 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	9.2 ± 0.2 s
Spin	1
nuclear quadrupole moment
tarikh penemuan	1966
parity	+

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

¹⁴¹Pm

Nombor jisim	141
nombor neutron	80
Jisim Atom Relatif	140.913555081 ± 0.000015 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	20.9 ± 0.05 m
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1952
parity	+

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

¹⁴²Pm

Nombor jisim	142
nombor neutron	81
Jisim Atom Relatif	141.912890982 ± 0.00002533 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	40.5 ± 0.5 s
Spin	1
nuclear quadrupole moment
tarikh penemuan	1959
parity	+

decay mode	Keamatan (fizik)
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)	100%
e⁺ (positron emission)	77.1%
ϵ (electron capture)	22.9%

¹⁴³Pm

Nombor jisim	143
nombor neutron	82
Jisim Atom Relatif	142.910938068 ± 0.00000316 Da
g-factor	1.52 ± 0.2
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	265 ± 7 d
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1952
parity	+

decay mode	Keamatan (fizik)
ϵ (electron capture)	100%
e⁺ (positron emission)	5.7%

¹⁴⁴Pm

Nombor jisim	144
nombor neutron	83
Jisim Atom Relatif	143.912596208 ± 0.000003126 Da
g-factor	0.338 ± 0.028
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	363 ± 14 d
Spin	5
nuclear quadrupole moment
tarikh penemuan	1952
parity	-

decay mode	Keamatan (fizik)
ϵ (electron capture)	100%
e⁺ (positron emission)	8%

¹⁴⁵Pm

Nombor jisim	145
nombor neutron	84
Jisim Atom Relatif	144.912755748 ± 0.000003011 Da
g-factor	1.52 ± 0.064
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	17.7 ± 0.4 y
Spin	5/2
nuclear quadrupole moment	0.23 ± 0.08
tarikh penemuan	1951
parity	+

decay mode	Keamatan (fizik)
ϵ (electron capture)	100%
α (α emission)	2.8%

¹⁴⁶Pm

Nombor jisim	146
nombor neutron	85
Jisim Atom Relatif	145.91470224 ± 0.000004589 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.53 ± 0.05 y
Spin	3
nuclear quadrupole moment
tarikh penemuan	1960
parity	-

decay mode	Keamatan (fizik)
ϵ (electron capture)	66%
β⁻ (β⁻ decay)	34%

¹⁴⁷Pm

Nombor jisim	147
nombor neutron	86
Jisim Atom Relatif	146.915144944 ± 0.000001382 Da
g-factor	0.73714285714286 ± 0.02
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.6234 ± 0.0002 y
Spin	7/2
nuclear quadrupole moment	0.74 ± 0.2
tarikh penemuan	1947
parity	+

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

¹⁴⁸Pm

Nombor jisim	148
nombor neutron	87
Jisim Atom Relatif	147.917481091 ± 0.000006108 Da
g-factor	2.1 ± 0.2
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.368 ± 0.007 d
Spin	1
nuclear quadrupole moment	0.2 ± 0.2
tarikh penemuan	1947
parity	-

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

¹⁴⁹Pm

Nombor jisim	149
nombor neutron	88
Jisim Atom Relatif	148.918341507 ± 0.000002344 Da
g-factor	0.94285714285714 ± 0.14285714285714
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	53.08 ± 0.05 h
Spin	7/2
nuclear quadrupole moment
tarikh penemuan	1947
parity	+

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

¹⁵⁰Pm

Nombor jisim	150
nombor neutron	89
Jisim Atom Relatif	149.920990014 ± 0.000021504 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.698 ± 0.015 h
Spin	1
nuclear quadrupole moment
tarikh penemuan	1952
parity	-

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

¹⁵¹Pm

Nombor jisim	151
nombor neutron	90
Jisim Atom Relatif	150.921216613 ± 0.000004949 Da
g-factor	0.72 ± 0.08
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	28.4 ± 0.04 h
Spin	5/2
nuclear quadrupole moment	2.2 ± 0.9
tarikh penemuan	1952
parity	+

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

¹⁵²Pm

Nombor jisim	152
nombor neutron	91
Jisim Atom Relatif	151.923505185 ± 0.000027809 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	4.12 ± 0.08 m
Spin	1
nuclear quadrupole moment
tarikh penemuan	1958
parity	+

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

¹⁵³Pm

Nombor jisim	153
nombor neutron	92
Jisim Atom Relatif	152.924156252 ± 0.000009729 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	5.25 ± 0.02 m
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1962
parity	-

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

¹⁵⁴Pm

Nombor jisim	154
nombor neutron	93
Jisim Atom Relatif	153.926712791 ± 0.000026861 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	2.68 ± 0.07 m
Spin	4
nuclear quadrupole moment
tarikh penemuan	1958
parity	+

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

¹⁵⁵Pm

Nombor jisim	155
nombor neutron	94
Jisim Atom Relatif	154.928136951 ± 0.000005065 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	41.5 ± 0.2 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1982
parity	-

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

¹⁵⁶Pm

Nombor jisim	156
nombor neutron	95
Jisim Atom Relatif	155.931114059 ± 0.000001275 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	27.4 ± 0.5 s
Spin	4
nuclear quadrupole moment
tarikh penemuan	1986
parity	+

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

¹⁵⁷Pm

Nombor jisim	157
nombor neutron	96
Jisim Atom Relatif	156.933121298 ± 0.000007521 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	10.56 ± 0.1 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1987
parity	-

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

¹⁵⁸Pm

Nombor jisim	158
nombor neutron	97
Jisim Atom Relatif	157.936546948 ± 0.000000953 Da
g-factor	0
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	4.8 ± 0.5 s
Spin	0
nuclear quadrupole moment	0
tarikh penemuan	1987
parity	+

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

¹⁵⁹Pm

Nombor jisim	159
nombor neutron	98
Jisim Atom Relatif	158.939286409 ± 0.000010777 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.49 ± 0.13 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	1998
parity	-

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

¹⁶⁰Pm

Nombor jisim	160
nombor neutron	99
Jisim Atom Relatif	159.943215272 ± 0.0000022 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	725 ± 57 ms
Spin	6
nuclear quadrupole moment
tarikh penemuan	2012
parity	-

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

¹⁶¹Pm

Nombor jisim	161
nombor neutron	100
Jisim Atom Relatif	160.946229837 ± 0.0000097 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	1.05 ± 0.15 s
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	2012
parity	-

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

¹⁶²Pm

Nombor jisim	162
nombor neutron	101
Jisim Atom Relatif	161.950574 ± 0.000322 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	630 ± 180 ms
Spin	2
nuclear quadrupole moment
tarikh penemuan	2012
parity	+

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

¹⁶³Pm

Nombor jisim	163
nombor neutron	102
Jisim Atom Relatif	162.953881 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat	255 ± 25 ms
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	2012
parity	-

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

¹⁶⁴Pm

Nombor jisim	164
nombor neutron	103
Jisim Atom Relatif	163.958819 ± 0.000429 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	5
nuclear quadrupole moment
tarikh penemuan	2018
parity	-

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

¹⁶⁵Pm

Nombor jisim	165
nombor neutron	104
Jisim Atom Relatif	164.96278 ± 0.000537 Da
g-factor
natural abundance
Reputan radioaktif	☢️ radioactive element
setengah hayat
Spin	5/2
nuclear quadrupole moment
tarikh penemuan	2018
parity	-

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

sejarah

penemu atau pereka	J.A. Marinsky, L.E. Glendenin, C.D. Coryell
tempat penemuan	United States
tarikh penemuan	1945
Etimologi	Named for the Greek god, Prometheus.
sebutan	pro-MEE-thi-em (Inggeris)

sumber

Abundance
Abundance in Earth's crust
natural abundance (lautan)
natural abundance (Tubuh manusia)	0 %
natural abundance (Meteoroid)	0 %
natural abundance (Matahari)	0 %
Abundance in Universe	0 %

Nuclear Screening Constants

1	s	1.2042
2	p	4.2562
2	s	16.0296
3	d	13.9018
3	p	19.4461
3	s	19.8154
4	d	33.26
4	f	37.866
4	p	30.3768
4	s	29.3604
5	p	44.586
5	s	42.1645
6	s	51.6046

Prometium on ChemicalAid

Prometium (Pm)

Sifat Fizikal

Sifat Kimia

other

Isotopes of Promethium

126Pm

127Pm

128Pm

129Pm

130Pm

131Pm

132Pm

133Pm

134Pm

135Pm

136Pm

137Pm

138Pm

139Pm

140Pm

141Pm

142Pm

143Pm

144Pm

145Pm

146Pm

147Pm

148Pm

149Pm

150Pm

151Pm

152Pm

153Pm

154Pm

155Pm

156Pm

157Pm

158Pm

159Pm

160Pm

161Pm

162Pm

163Pm

164Pm

165Pm

sejarah

sumber

Nuclear Screening Constants

¹²⁶Pm

¹²⁷Pm

¹²⁸Pm

¹²⁹Pm

¹³⁰Pm

¹³¹Pm

¹³²Pm

¹³³Pm

¹³⁴Pm

¹³⁵Pm

¹³⁶Pm

¹³⁷Pm

¹³⁸Pm

¹³⁹Pm

¹⁴⁰Pm

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