Prometyûm

Prometyûm (Pm)

chemical element with the atomic number of 61
Atomic Number61
Atomic Weight144.91276
Hejmara baristeyî126
Group
Period6
Blockf
Proton61 p+
Notron65 n0
Kareva61 e-
Animated Bohr model of Pm (Prometyûm)

Physical Property

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: Prometyûm0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
ionization energy
ionization energy of Pm (Prometyûm)
enthalpy of vaporization
enthalpy of fusion
standard enthalpy of formation
Kareva
electron shell2, 8, 18, 23, 8, 2
Bohr model: Pm (Prometyûm)
valence electron2
Lewis structure: Pm (Prometyûm)
electron configuration[Xe] 4f5 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f5 6s2
Enhanced Bohr model of Pm (Prometyûm)
Orbital Diagram of Pm (Prometyûm)
oxidation number2, 3
electronegativity
Electrophilicity Index
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
Melting Point
1.315,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearancemetallic
refractive index
thermodynamic material property
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
electrical conductivity
1,3 MS/m
electrical resistivity
0,00000075 m Ω
superconductivity
magnetism
type
magnetic susceptibility (Mass)
magnetic susceptibility (Molar)
magnetic susceptibility (Volume)
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal Structure ()
lattice constant
Lattice Angles
mechanical property
hardness
bulk modulus
33 GPa
shear modulus
18 GPa
Young's modulus
46 GPa
Poisson's ratio
0,28
Leza dengê
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

Hejmara baristeyî126
neutron number65
Giraniya atomê
125,957327 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity

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

127Pm

Hejmara baristeyî127
neutron number66
Giraniya atomê
126,951358 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê
parity+

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

128Pm

Hejmara baristeyî128
neutron number67
Giraniya atomê
127,948234 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1 ± 0,3 s
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1999
parity+

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

129Pm

Hejmara baristeyî129
neutron number68
Giraniya atomê
128,942909 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,4 ± 0,9 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2004
parity+

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

130Pm

Hejmara baristeyî130
neutron number69
Giraniya atomê
129,940451 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,6 ± 0,2 s
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1985
parity+

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

131Pm

Hejmara baristeyî131
neutron number70
Giraniya atomê
130,935834 ± 0,000215 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,3 ± 0,8 s
spin11/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1998
parity-

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

132Pm

Hejmara baristeyî132
neutron number71
Giraniya atomê
131,93384 ± 0,00016 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,2 ± 0,6 s
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1977
parity+

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

133Pm

Hejmara baristeyî133
neutron number72
Giraniya atomê
132,929782 ± 0,000054 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
13,5 ± 2,1 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1977
parity+

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

134Pm

Hejmara baristeyî134
neutron number73
Giraniya atomê
133,928326 ± 0,000045 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
22 ± 1 s
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1977
parity+

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

135Pm

Hejmara baristeyî135
neutron number74
Giraniya atomê
134,924785 ± 0,000089 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
49 ± 3 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1975
parity+

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

136Pm

Hejmara baristeyî136
neutron number75
Giraniya atomê
135,923595949 ± 0,000074152 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
107 ± 6 s
spin7
nuclear quadrupole moment
dema îcadkirinê yan keşfê1988
parity+

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

137Pm

Hejmara baristeyî137
neutron number76
Giraniya atomê
136,920479519 ± 0,000014 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1975
parity-

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

138Pm

Hejmara baristeyî138
neutron number77
Giraniya atomê
137,919576119 ± 0,000012456 Da
g-factor
1,0666666666667 ± 0,3
natural abundance
radioactivity☢️ radioactive element
half-life
3,24 ± 0,05 m
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1973
parity-

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

139Pm

Hejmara baristeyî139
neutron number78
Giraniya atomê
138,916799228 ± 0,000014587 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,15 ± 0,05 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1967
parity

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

140Pm

Hejmara baristeyî140
neutron number79
Giraniya atomê
139,916035918 ± 0,000026001 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
9,2 ± 0,2 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1966
parity+

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

141Pm

Hejmara baristeyî141
neutron number80
Giraniya atomê
140,913555081 ± 0,000015 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
20,9 ± 0,05 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1952
parity+

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

142Pm

Hejmara baristeyî142
neutron number81
Giraniya atomê
141,912890982 ± 0,00002533 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40,5 ± 0,5 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1959
parity+

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

143Pm

Hejmara baristeyî143
neutron number82
Giraniya atomê
142,910938068 ± 0,00000316 Da
g-factor
1,52 ± 0,2
natural abundance
radioactivity☢️ radioactive element
half-life
265 ± 7 d
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1952
parity+

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

144Pm

Hejmara baristeyî144
neutron number83
Giraniya atomê
143,912596208 ± 0,000003126 Da
g-factor
0,338 ± 0,028
natural abundance
radioactivity☢️ radioactive element
half-life
363 ± 14 d
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê1952
parity-

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

145Pm

Hejmara baristeyî145
neutron number84
Giraniya atomê
144,912755748 ± 0,000003011 Da
g-factor
1,52 ± 0,064
natural abundance
radioactivity☢️ radioactive element
half-life
17,7 ± 0,4 y
spin5/2
nuclear quadrupole moment
0,23 ± 0,08
dema îcadkirinê yan keşfê1951
parity+

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

146Pm

Hejmara baristeyî146
neutron number85
Giraniya atomê
145,91470224 ± 0,000004589 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,53 ± 0,05 y
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1960
parity-

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

147Pm

Hejmara baristeyî147
neutron number86
Giraniya atomê
146,915144944 ± 0,000001382 Da
g-factor
0,73714285714286 ± 0,02
natural abundance
radioactivity☢️ radioactive element
half-life
2,6234 ± 0,0002 y
spin7/2
nuclear quadrupole moment
0,74 ± 0,2
dema îcadkirinê yan keşfê1947
parity+

decay modeintensity
β (β decay)100%

148Pm

Hejmara baristeyî148
neutron number87
Giraniya atomê
147,917481091 ± 0,000006108 Da
g-factor
2,1 ± 0,2
natural abundance
radioactivity☢️ radioactive element
half-life
5,368 ± 0,007 d
spin1
nuclear quadrupole moment
0,2 ± 0,2
dema îcadkirinê yan keşfê1947
parity-

decay modeintensity
β (β decay)100%

149Pm

Hejmara baristeyî149
neutron number88
Giraniya atomê
148,918341507 ± 0,000002344 Da
g-factor
0,94285714285714 ± 0,14285714285714
natural abundance
radioactivity☢️ radioactive element
half-life
53,08 ± 0,05 h
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1947
parity+

decay modeintensity
β (β decay)100%

150Pm

Hejmara baristeyî150
neutron number89
Giraniya atomê
149,920990014 ± 0,000021504 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,698 ± 0,015 h
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1952
parity-

decay modeintensity
β (β decay)100%

151Pm

Hejmara baristeyî151
neutron number90
Giraniya atomê
150,921216613 ± 0,000004949 Da
g-factor
0,72 ± 0,08
natural abundance
radioactivity☢️ radioactive element
half-life
28,4 ± 0,04 h
spin5/2
nuclear quadrupole moment
2,2 ± 0,9
dema îcadkirinê yan keşfê1952
parity+

decay modeintensity
β (β decay)100%

152Pm

Hejmara baristeyî152
neutron number91
Giraniya atomê
151,923505185 ± 0,000027809 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,12 ± 0,08 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1958
parity+

decay modeintensity
β (β decay)100%

153Pm

Hejmara baristeyî153
neutron number92
Giraniya atomê
152,924156252 ± 0,000009729 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,25 ± 0,02 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1962
parity-

decay modeintensity
β (β decay)100%

154Pm

Hejmara baristeyî154
neutron number93
Giraniya atomê
153,926712791 ± 0,000026861 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,68 ± 0,07 m
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1958
parity+

decay modeintensity
β (β decay)100%

155Pm

Hejmara baristeyî155
neutron number94
Giraniya atomê
154,928136951 ± 0,000005065 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
41,5 ± 0,2 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1982
parity-

decay modeintensity
β (β decay)100%

156Pm

Hejmara baristeyî156
neutron number95
Giraniya atomê
155,931114059 ± 0,000001275 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
27,4 ± 0,5 s
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1986
parity+

decay modeintensity
β (β decay)100%

157Pm

Hejmara baristeyî157
neutron number96
Giraniya atomê
156,933121298 ± 0,000007521 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
10,56 ± 0,1 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1987
parity-

decay modeintensity
β (β decay)100%

158Pm

Hejmara baristeyî158
neutron number97
Giraniya atomê
157,936546948 ± 0,000000953 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
4,8 ± 0,5 s
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1987
parity+

decay modeintensity
β (β decay)100%

159Pm

Hejmara baristeyî159
neutron number98
Giraniya atomê
158,939286409 ± 0,000010777 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,49 ± 0,13 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1998
parity-

decay modeintensity
β (β decay)100%

160Pm

Hejmara baristeyî160
neutron number99
Giraniya atomê
159,943215272 ± 0,0000022 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
725 ± 57 ms
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê2012
parity-

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

161Pm

Hejmara baristeyî161
neutron number100
Giraniya atomê
160,946229837 ± 0,0000097 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,05 ± 0,15 s
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2012
parity-

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

162Pm

Hejmara baristeyî162
neutron number101
Giraniya atomê
161,950574 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
630 ± 180 ms
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2012
parity+

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

163Pm

Hejmara baristeyî163
neutron number102
Giraniya atomê
162,953881 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
255 ± 25 ms
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2012
parity-

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

164Pm

Hejmara baristeyî164
neutron number103
Giraniya atomê
163,958819 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity-

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

165Pm

Hejmara baristeyî165
neutron number104
Giraniya atomê
164,96278 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity-

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

dîrok

kaşîf an îcadkerJ.A. Marinsky, L.E. Glendenin, C.D. Coryell
location of discoveryUnited States
dema îcadkirinê yan keşfê1945
BêjenasîNamed for the Greek god, Prometheus.
pronunciationpro-MEE-thi-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
natural abundance (Okyanûs)
natural abundance (human body)
0 %
natural abundance (meteoroid)
0 %
natural abundance (Roj)
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