Promethium (Pm)

grundstof med atomnummer 61

Atomnummer	61
Atommasse	144.91276
mass number	126

Gruppe
Periode	6
Blok	f

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

Animated Bohrs atommodel of Pm (Promethium)

Fysisk Egenskab

Atomradius	185 pm 283 pm
molar volume
Kovalent Radius	173 pm 135 pm 199 pm
Metallic Radius
Ionisk radius	97 pm 109,3 pm 114,4 pm
Crystal Radius	111 pm 123,3 pm 128,4 pm
Van der Waals-radius	238 pm 272 pm 354,7 pm
massefylde	7,26 g/cm³

Kemisk Egenskab

{ERROR}

energi

proton affinity
electron affinity
ioniseringsenergi	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

Fordampningsvarme
smeltevarme
standard enthalpy of formation
elektron

Elektronskal	2, 8, 18, 23, 8, 2

Valenselektron	2 ⓘ

electron configuration	[Xe] 4f⁵ 6s²ⓘ 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶ 4f⁵ 6s²

Oxidationstrin	2, 3
Elektronegativitet	0.1810032
Electrophilicity Index
fundamental state of matter

stoffase
gaseous state of matter
Kogepunkt
Smeltepunkt	1.315,15 K
critical pressure
critical temperature
trippelpunkt
appearance
farve	Sort #ff1493 #a3ffc7 #a3ffc7
appearance	metallic
Brydningsindeks
materialeegenskab
Varmeledningsevne	17,9 W/(m K)
Termisk ekspansion	0,000011 1/K
molar heat capacity
Varmefylde
Adiabateksponenten
electrical properties
type	Conductor
specifik ledningsevne	1,3 MS/m
Elektrisk resistivitet	0,00000075 Ω*m
superledning
Magnetisme
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curietemperaturen
Néel temperature
struktur
Krystalstruktur	{ERROR}
lattice constant
Lattice Angles
mechanical property
hårdhed
Kompressibilitetsmodul	33 GPa
Forskydningsmodul	18 GPa
E-modul	46 GPa
Poissons forhold	0,28
speed of sound
klassificering
Kategori	Actinider, Lanthanides
CAS Group
IUPAC Group
Glawe Number	28
Mendeleev Number	21
Pettifor Number	29
Geochemical Class	rare earth & related
Goldschmidt classification	litophile

øvrige

Gas Basicity
polarizability	200 ± 20 a₀
C6 Dispersion Coefficient	3.340 a₀
allotrope
Neutron cross section	8.400
Neutron Mass Absorption
quantum number	6H5/2
rumgruppe	()

Isotopes of Promethium

Stable Isotopes	0
Unstable Isotopes	40
Natural Isotopes	0

¹²⁶Pm

mass number	126
neutron number	65
Relative Atomic Mass	125,957327 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin
nuclear quadrupole moment
opdagelsesdato
Paritet

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)
β⁺ p (β⁺-delayed proton emission)

¹²⁷Pm

mass number	127
neutron number	66
Relative Atomic Mass	126,951358 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	3/2
nuclear quadrupole moment
opdagelsesdato
Paritet	+

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

¹²⁸Pm

mass number	128
neutron number	67
Relative Atomic Mass	127,948234 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1 ± 0,3 s
spin	4
nuclear quadrupole moment
opdagelsesdato	1999
Paritet	+

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

¹²⁹Pm

mass number	129
neutron number	68
Relative Atomic Mass	128,942909 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,4 ± 0,9 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2004
Paritet	+

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

¹³⁰Pm

mass number	130
neutron number	69
Relative Atomic Mass	129,940451 ± 0,000215 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,6 ± 0,2 s
spin	5
nuclear quadrupole moment
opdagelsesdato	1985
Paritet	+

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

¹³¹Pm

mass number	131
neutron number	70
Relative Atomic Mass	130,935834 ± 0,000215 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	6,3 ± 0,8 s
spin	11/2
nuclear quadrupole moment
opdagelsesdato	1998
Paritet	-

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

¹³²Pm

mass number	132
neutron number	71
Relative Atomic Mass	131,93384 ± 0,00016 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	6,2 ± 0,6 s
spin	3
nuclear quadrupole moment
opdagelsesdato	1977
Paritet	+

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

¹³³Pm

mass number	133
neutron number	72
Relative Atomic Mass	132,929782 ± 0,000054 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	13,5 ± 2,1 s
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1977
Paritet	+

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

¹³⁴Pm

mass number	134
neutron number	73
Relative Atomic Mass	133,928326 ± 0,000045 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	22 ± 1 s
spin	5
nuclear quadrupole moment
opdagelsesdato	1977
Paritet	+

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

¹³⁵Pm

mass number	135
neutron number	74
Relative Atomic Mass	134,924785 ± 0,000089 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	49 ± 3 s
spin	3/2
nuclear quadrupole moment
opdagelsesdato	1975
Paritet	+

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

¹³⁶Pm

mass number	136
neutron number	75
Relative Atomic Mass	135,923595949 ± 0,000074152 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	107 ± 6 s
spin	7
nuclear quadrupole moment
opdagelsesdato	1988
Paritet	+

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

¹³⁷Pm

mass number	137
neutron number	76
Relative Atomic Mass	136,920479519 ± 0,000014 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1975
Paritet	-

decay mode	Intensitet
β⁺ (β⁺ decay; β⁺ = ϵ + e⁺)

¹³⁸Pm

mass number	138
neutron number	77
Relative Atomic Mass	137,919576119 ± 0,000012456 Da
g-factor	1,0666666666667 ± 0,3
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	3,24 ± 0,05 m
spin	3
nuclear quadrupole moment
opdagelsesdato	1973
Paritet	-

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

¹³⁹Pm

mass number	139
neutron number	78
Relative Atomic Mass	138,916799228 ± 0,000014587 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,15 ± 0,05 m
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1967
Paritet

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

¹⁴⁰Pm

mass number	140
neutron number	79
Relative Atomic Mass	139,916035918 ± 0,000026001 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	9,2 ± 0,2 s
spin	1
nuclear quadrupole moment
opdagelsesdato	1966
Paritet	+

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

¹⁴¹Pm

mass number	141
neutron number	80
Relative Atomic Mass	140,913555081 ± 0,000015 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	20,9 ± 0,05 m
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1952
Paritet	+

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

¹⁴²Pm

mass number	142
neutron number	81
Relative Atomic Mass	141,912890982 ± 0,00002533 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	40,5 ± 0,5 s
spin	1
nuclear quadrupole moment
opdagelsesdato	1959
Paritet	+

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

¹⁴³Pm

mass number	143
neutron number	82
Relative Atomic Mass	142,910938068 ± 0,00000316 Da
g-factor	1,52 ± 0,2
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	265 ± 7 d
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1952
Paritet	+

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

¹⁴⁴Pm

mass number	144
neutron number	83
Relative Atomic Mass	143,912596208 ± 0,000003126 Da
g-factor	0,338 ± 0,028
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	363 ± 14 d
spin	5
nuclear quadrupole moment
opdagelsesdato	1952
Paritet	-

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

¹⁴⁵Pm

mass number	145
neutron number	84
Relative Atomic Mass	144,912755748 ± 0,000003011 Da
g-factor	1,52 ± 0,064
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	17,7 ± 0,4 y
spin	5/2
nuclear quadrupole moment	0,23 ± 0,08
opdagelsesdato	1951
Paritet	+

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

¹⁴⁶Pm

mass number	146
neutron number	85
Relative Atomic Mass	145,91470224 ± 0,000004589 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,53 ± 0,05 y
spin	3
nuclear quadrupole moment
opdagelsesdato	1960
Paritet	-

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

¹⁴⁷Pm

mass number	147
neutron number	86
Relative Atomic Mass	146,915144944 ± 0,000001382 Da
g-factor	0,73714285714286 ± 0,02
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,6234 ± 0,0002 y
spin	7/2
nuclear quadrupole moment	0,74 ± 0,2
opdagelsesdato	1947
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁴⁸Pm

mass number	148
neutron number	87
Relative Atomic Mass	147,917481091 ± 0,000006108 Da
g-factor	2,1 ± 0,2
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,368 ± 0,007 d
spin	1
nuclear quadrupole moment	0,2 ± 0,2
opdagelsesdato	1947
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁴⁹Pm

mass number	149
neutron number	88
Relative Atomic Mass	148,918341507 ± 0,000002344 Da
g-factor	0,94285714285714 ± 0,14285714285714
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	53,08 ± 0,05 h
spin	7/2
nuclear quadrupole moment
opdagelsesdato	1947
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁰Pm

mass number	150
neutron number	89
Relative Atomic Mass	149,920990014 ± 0,000021504 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,698 ± 0,015 h
spin	1
nuclear quadrupole moment
opdagelsesdato	1952
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵¹Pm

mass number	151
neutron number	90
Relative Atomic Mass	150,921216613 ± 0,000004949 Da
g-factor	0,72 ± 0,08
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	28,4 ± 0,04 h
spin	5/2
nuclear quadrupole moment	2,2 ± 0,9
opdagelsesdato	1952
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵²Pm

mass number	152
neutron number	91
Relative Atomic Mass	151,923505185 ± 0,000027809 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,12 ± 0,08 m
spin	1
nuclear quadrupole moment
opdagelsesdato	1958
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵³Pm

mass number	153
neutron number	92
Relative Atomic Mass	152,924156252 ± 0,000009729 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	5,25 ± 0,02 m
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1962
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁴Pm

mass number	154
neutron number	93
Relative Atomic Mass	153,926712791 ± 0,000026861 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	2,68 ± 0,07 m
spin	4
nuclear quadrupole moment
opdagelsesdato	1958
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁵Pm

mass number	155
neutron number	94
Relative Atomic Mass	154,928136951 ± 0,000005065 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	41,5 ± 0,2 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1982
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁶Pm

mass number	156
neutron number	95
Relative Atomic Mass	155,931114059 ± 0,000001275 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	27,4 ± 0,5 s
spin	4
nuclear quadrupole moment
opdagelsesdato	1986
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁷Pm

mass number	157
neutron number	96
Relative Atomic Mass	156,933121298 ± 0,000007521 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	10,56 ± 0,1 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1987
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁸Pm

mass number	158
neutron number	97
Relative Atomic Mass	157,936546948 ± 0,000000953 Da
g-factor	0
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	4,8 ± 0,5 s
spin	0
nuclear quadrupole moment	0
opdagelsesdato	1987
Paritet	+

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁵⁹Pm

mass number	159
neutron number	98
Relative Atomic Mass	158,939286409 ± 0,000010777 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,49 ± 0,13 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	1998
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)	100%

¹⁶⁰Pm

mass number	160
neutron number	99
Relative Atomic Mass	159,943215272 ± 0,0000022 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	725 ± 57 ms
spin	6
nuclear quadrupole moment
opdagelsesdato	2012
Paritet	-

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

¹⁶¹Pm

mass number	161
neutron number	100
Relative Atomic Mass	160,946229837 ± 0,0000097 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	1,05 ± 0,15 s
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2012
Paritet	-

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

¹⁶²Pm

mass number	162
neutron number	101
Relative Atomic Mass	161,950574 ± 0,000322 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	630 ± 180 ms
spin	2
nuclear quadrupole moment
opdagelsesdato	2012
Paritet	+

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

¹⁶³Pm

mass number	163
neutron number	102
Relative Atomic Mass	162,953881 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid	255 ± 25 ms
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2012
Paritet	-

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

¹⁶⁴Pm

mass number	164
neutron number	103
Relative Atomic Mass	163,958819 ± 0,000429 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5
nuclear quadrupole moment
opdagelsesdato	2018
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

¹⁶⁵Pm

mass number	165
neutron number	104
Relative Atomic Mass	164,96278 ± 0,000537 Da
g-factor
natural abundance
radioaktivitet	☢️ radioactive element
halveringstid
spin	5/2
nuclear quadrupole moment
opdagelsesdato	2018
Paritet	-

decay mode	Intensitet
β⁻ (β⁻ decay)
β⁻ n (β⁻-delayed neutron emission)

historie

opdager eller opfinder	J.A. Marinsky, L.E. Glendenin, C.D. Coryell
fundsted	United States
opdagelsesdato	1945
etymologi	Named for the Greek god, Prometheus.
udtale	pro-MEE-thi-em (engelsk)

source

Forekomst
Abundance in Earth's crust
natural abundance (verdenshave)
natural abundance (menneskelige krop)	0 %
natural abundance (Meteoroid)	0 %
natural abundance (Solen)	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

Promethium on ChemicalAid

Promethium (Pm)

Fysisk Egenskab

Kemisk Egenskab

øvrige

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

historie

source

Nuclear Screening Constants

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