Prometi

Prometi (Pm)

chemical element with the atomic number of 61
Atomic Number61
Atomic Weight144.91276
Rhif màs126
Group
Period6
Blockf
Proton61 p+
Niwtron65 n0
Electron61 e-
Animated Bohr model of Pm (Prometi)

Nodwedd Ffisegol

Atomic Radius
185 pm
molar volume
covalent radius
173 pm
Metallic Radius
ionic radius
97 pm
Crystal Radius
111 pm
Van der Waals radius
238 pm
density
7.26 g/cm³
Atomic Radii Of The Elements: Prometi0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Pm (Prometi)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Electron
plisgyn yr electron2, 8, 18, 23, 8, 2
Bohr model: Pm (Prometi)
valence electron2
Lewis structure: Pm (Prometi)
trefn yr electronnau[Xe] 4f5 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f5 6s2
Enhanced Bohr model of Pm (Prometi)
Orbital Diagram of Pm (Prometi)
Cyflwr ocsidiad2, 3
Electronegatifedd
Electrophilicity Index
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
Melting Point
1,315.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearancemetallic
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
17.9 W/(m K)
thermal expansion
0.000011 1/K
molar heat capacity
Specific Heat Capacity
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
1.3 MS/m
Gwrthedd
0.00000075 m Ω
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Curie temperature
Néel temperature
strwythur
Crystal Structure ()
lattice constant
Lattice Angles
nodwedd mecanyddol deunyddiau
hardness
bulk modulus
33 GPa
shear modulus
18 GPa
Young's modulus
46 GPa
Poisson's ratio
0.28
speed of sound
classification
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number28
Mendeleev Number21
Pettifor Number29
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
200 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
8,400
Neutron Mass Absorption
quantum number6H5/2
space group ()

Isotopes of Promethium

Stable Isotopes0
Unstable Isotopes40
Natural Isotopes0

126Pm

Rhif màs126
neutron number65
relative atomic mass
125.957327 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin
nuclear quadrupole moment
dyddiad darganfod
parity

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

127Pm

Rhif màs127
neutron number66
relative atomic mass
126.951358 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod
parity+

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

128Pm

Rhif màs128
neutron number67
relative atomic mass
127.948234 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1 ± 0.3 s
spin4
nuclear quadrupole moment
dyddiad darganfod1999
parity+

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

129Pm

Rhif màs129
neutron number68
relative atomic mass
128.942909 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.4 ± 0.9 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod2004
parity+

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

130Pm

Rhif màs130
neutron number69
relative atomic mass
129.940451 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.6 ± 0.2 s
spin5
nuclear quadrupole moment
dyddiad darganfod1985
parity+

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

131Pm

Rhif màs131
neutron number70
relative atomic mass
130.935834 ± 0.000215 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.3 ± 0.8 s
spin11/2
nuclear quadrupole moment
dyddiad darganfod1998
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

132Pm

Rhif màs132
neutron number71
relative atomic mass
131.93384 ± 0.00016 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.2 ± 0.6 s
spin3
nuclear quadrupole moment
dyddiad darganfod1977
parity+

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

133Pm

Rhif màs133
neutron number72
relative atomic mass
132.929782 ± 0.000054 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
13.5 ± 2.1 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1977
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

134Pm

Rhif màs134
neutron number73
relative atomic mass
133.928326 ± 0.000045 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
22 ± 1 s
spin5
nuclear quadrupole moment
dyddiad darganfod1977
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

135Pm

Rhif màs135
neutron number74
relative atomic mass
134.924785 ± 0.000089 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
49 ± 3 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1975
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

136Pm

Rhif màs136
neutron number75
relative atomic mass
135.923595949 ± 0.000074152 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
107 ± 6 s
spin7
nuclear quadrupole moment
dyddiad darganfod1988
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

137Pm

Rhif màs137
neutron number76
relative atomic mass
136.920479519 ± 0.000014 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod1975
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)

138Pm

Rhif màs138
neutron number77
relative atomic mass
137.919576119 ± 0.000012456 Da
g-factor
1.0666666666667 ± 0.3
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.24 ± 0.05 m
spin3
nuclear quadrupole moment
dyddiad darganfod1973
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

139Pm

Rhif màs139
neutron number78
relative atomic mass
138.916799228 ± 0.000014587 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.15 ± 0.05 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1967
parity

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

140Pm

Rhif màs140
neutron number79
relative atomic mass
139.916035918 ± 0.000026001 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.2 ± 0.2 s
spin1
nuclear quadrupole moment
dyddiad darganfod1966
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

141Pm

Rhif màs141
neutron number80
relative atomic mass
140.913555081 ± 0.000015 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
20.9 ± 0.05 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1952
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%

142Pm

Rhif màs142
neutron number81
relative atomic mass
141.912890982 ± 0.00002533 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
40.5 ± 0.5 s
spin1
nuclear quadrupole moment
dyddiad darganfod1959
parity+

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

143Pm

Rhif màs143
neutron number82
relative atomic mass
142.910938068 ± 0.00000316 Da
g-factor
1.52 ± 0.2
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
265 ± 7 d
spin5/2
nuclear quadrupole moment
dyddiad darganfod1952
parity+

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

144Pm

Rhif màs144
neutron number83
relative atomic mass
143.912596208 ± 0.000003126 Da
g-factor
0.338 ± 0.028
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
363 ± 14 d
spin5
nuclear quadrupole moment
dyddiad darganfod1952
parity-

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

145Pm

Rhif màs145
neutron number84
relative atomic mass
144.912755748 ± 0.000003011 Da
g-factor
1.52 ± 0.064
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17.7 ± 0.4 y
spin5/2
nuclear quadrupole moment
0.23 ± 0.08
dyddiad darganfod1951
parity+

decay modeintensity
ϵ (electron capture)100%
α (α emission)2.8%

146Pm

Rhif màs146
neutron number85
relative atomic mass
145.91470224 ± 0.000004589 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.53 ± 0.05 y
spin3
nuclear quadrupole moment
dyddiad darganfod1960
parity-

decay modeintensity
ϵ (electron capture)66%
β (β decay)34%

147Pm

Rhif màs147
neutron number86
relative atomic mass
146.915144944 ± 0.000001382 Da
g-factor
0.73714285714286 ± 0.02
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.6234 ± 0.0002 y
spin7/2
nuclear quadrupole moment
0.74 ± 0.2
dyddiad darganfod1947
parity+

decay modeintensity
β (β decay)100%

148Pm

Rhif màs148
neutron number87
relative atomic mass
147.917481091 ± 0.000006108 Da
g-factor
2.1 ± 0.2
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.368 ± 0.007 d
spin1
nuclear quadrupole moment
0.2 ± 0.2
dyddiad darganfod1947
parity-

decay modeintensity
β (β decay)100%

149Pm

Rhif màs149
neutron number88
relative atomic mass
148.918341507 ± 0.000002344 Da
g-factor
0.94285714285714 ± 0.14285714285714
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
53.08 ± 0.05 h
spin7/2
nuclear quadrupole moment
dyddiad darganfod1947
parity+

decay modeintensity
β (β decay)100%

150Pm

Rhif màs150
neutron number89
relative atomic mass
149.920990014 ± 0.000021504 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.698 ± 0.015 h
spin1
nuclear quadrupole moment
dyddiad darganfod1952
parity-

decay modeintensity
β (β decay)100%

151Pm

Rhif màs151
neutron number90
relative atomic mass
150.921216613 ± 0.000004949 Da
g-factor
0.72 ± 0.08
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
28.4 ± 0.04 h
spin5/2
nuclear quadrupole moment
2.2 ± 0.9
dyddiad darganfod1952
parity+

decay modeintensity
β (β decay)100%

152Pm

Rhif màs152
neutron number91
relative atomic mass
151.923505185 ± 0.000027809 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.12 ± 0.08 m
spin1
nuclear quadrupole moment
dyddiad darganfod1958
parity+

decay modeintensity
β (β decay)100%

153Pm

Rhif màs153
neutron number92
relative atomic mass
152.924156252 ± 0.000009729 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.25 ± 0.02 m
spin5/2
nuclear quadrupole moment
dyddiad darganfod1962
parity-

decay modeintensity
β (β decay)100%

154Pm

Rhif màs154
neutron number93
relative atomic mass
153.926712791 ± 0.000026861 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.68 ± 0.07 m
spin4
nuclear quadrupole moment
dyddiad darganfod1958
parity+

decay modeintensity
β (β decay)100%

155Pm

Rhif màs155
neutron number94
relative atomic mass
154.928136951 ± 0.000005065 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
41.5 ± 0.2 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1982
parity-

decay modeintensity
β (β decay)100%

156Pm

Rhif màs156
neutron number95
relative atomic mass
155.931114059 ± 0.000001275 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27.4 ± 0.5 s
spin4
nuclear quadrupole moment
dyddiad darganfod1986
parity+

decay modeintensity
β (β decay)100%

157Pm

Rhif màs157
neutron number96
relative atomic mass
156.933121298 ± 0.000007521 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
10.56 ± 0.1 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1987
parity-

decay modeintensity
β (β decay)100%

158Pm

Rhif màs158
neutron number97
relative atomic mass
157.936546948 ± 0.000000953 Da
g-factor
0
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.8 ± 0.5 s
spin0
nuclear quadrupole moment
0
dyddiad darganfod1987
parity+

decay modeintensity
β (β decay)100%

159Pm

Rhif màs159
neutron number98
relative atomic mass
158.939286409 ± 0.000010777 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.49 ± 0.13 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1998
parity-

decay modeintensity
β (β decay)100%

160Pm

Rhif màs160
neutron number99
relative atomic mass
159.943215272 ± 0.0000022 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
725 ± 57 ms
spin6
nuclear quadrupole moment
dyddiad darganfod2012
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

161Pm

Rhif màs161
neutron number100
relative atomic mass
160.946229837 ± 0.0000097 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.05 ± 0.15 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod2012
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

162Pm

Rhif màs162
neutron number101
relative atomic mass
161.950574 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
630 ± 180 ms
spin2
nuclear quadrupole moment
dyddiad darganfod2012
parity+

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

163Pm

Rhif màs163
neutron number102
relative atomic mass
162.953881 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
255 ± 25 ms
spin5/2
nuclear quadrupole moment
dyddiad darganfod2012
parity-

decay modeintensity
β (β decay)100%
β n (β-delayed neutron emission)

164Pm

Rhif màs164
neutron number103
relative atomic mass
163.958819 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5
nuclear quadrupole moment
dyddiad darganfod2018
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)

165Pm

Rhif màs165
neutron number104
relative atomic mass
164.96278 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5/2
nuclear quadrupole moment
dyddiad darganfod2018
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Promethium
Promethium spectrum visible

hanes

darganfyddwr neu ddyfeisiwrJ.A. Marinsky, L.E. Glendenin, C.D. Coryell
man darganfodUnited States
dyddiad darganfod1945
geirdarddiadNamed for the Greek god, Prometheus.
ynganiadpro-MEE-thi-em (Saesneg)

source

Abundance
Abundance in Earth's crust
natural abundance (cefnfor)
natural abundance (corff dynol)
0 %
natural abundance (Awyrfaen)
0 %
natural abundance (Haul)
0 %
Abundance in Universe
0 %

Nuclear Screening Constants

1s1.2042
2p4.2562
2s16.0296
3d13.9018
3p19.4461
3s19.8154
4d33.26
4f37.866
4p30.3768
4s29.3604
5p44.586
5s42.1645
6s51.6046