Praseodmyûm

Praseodmyûm (Pr)

element with the atomic number of 59
Atomic Number59
Atomic Weight140.90766
Hejmara baristeyî141
Group
Period6
Blockf
Proton59 p+
Notron82 n0
Kareva59 e-
Animated Bohr model of Pr (Praseodmyûm)

Physical Property

Atomic Radius
185 pm
molar volume
Covalent Radius
176 pm
Metallic Radius
ionic radius
99 pm
Crystal Radius
113 pm
Van der Waals radius
240 pm
density
6,773 g/cm³
Atomic Radii Of The Elements: Praseodmyûm0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

wize
proton affinity
electron affinity
ionization energy
ionization energy of Pr (Praseodmyûm)
enthalpy of vaporization
331 kJ/mol
enthalpy of fusion
11,3 kJ/mol
standard enthalpy of formation
356,9 kJ/mol
Kareva
electron shell2, 8, 18, 21, 8, 2
Bohr model: Pr (Praseodmyûm)
valence electron2
Lewis structure: Pr (Praseodmyûm)
electron configuration[Xe] 4f3 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f3 6s2
Enhanced Bohr model of Pr (Praseodmyûm)
Orbital Diagram of Pr (Praseodmyûm)
oxidation number0, 1, 2, 3, 4, 5
electronegativity
1.13
Electrophilicity Index
1,1474513688760803 eV/particle
fundamental state of matter
phase of matterSolid
gaseous state of matter
Boiling Point
3.793,15 K
Melting Point
1.204,15 K
critical pressure
critical temperature
triple point
appearance
color
Silver
appearancegrayish white
refractive index
thermodynamic material property
Thermal Conductivity
12,5 W/(m K)
thermal expansion
0,0000067 1/K
molar heat capacity
Specific Heat Capacity
0,193 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
electrical conductivity
1,4 MS/m
electrical resistivity
0,0000007 m Ω
superconductivity
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0,000000423 m³/Kg
magnetic susceptibility (Molar)
0,000000059604 m³/mol
magnetic susceptibility (Volume)
0,0028087
magnetic ordering
Germahiya Curie
Néel temperature
pêkhate
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3,67 Å
Lattice Anglesπ/2, π/2, 2 π/3
mechanical property
hardness
bulk modulus
29 GPa
shear modulus
15 GPa
Young's modulus
37 GPa
Poisson's ratio
0,28
Leza dengê
2.280 m/s
classification
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number30
Mendeleev Number17
Pettifor Number31
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
216 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
11,4
Neutron Mass Absorption
0,0029
quantum number4I9/2
space group194 (P63/mmc)

Isotopes of Praseodymium

Stable Isotopes1
Unstable Isotopes40
Natural Isotopes1

121Pr

Hejmara baristeyî121
neutron number62
Giraniya atomê
120,955393 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
12 ± 5 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2005
parity

decay modeintensity
p (proton emission)100%

122Pr

Hejmara baristeyî122
neutron number63
Giraniya atomê
121,951927 ± 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)

123Pr

Hejmara baristeyî123
neutron number64
Giraniya atomê
122,946076 ± 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+)
β+ p (β+-delayed proton emission)

124Pr

Hejmara baristeyî124
neutron number65
Giraniya atomê
123,94294 ± 0,00043 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,2 ± 0,2 s
spin
nuclear quadrupole moment
dema îcadkirinê yan keşfê1986
parity

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

125Pr

Hejmara baristeyî125
neutron number66
Giraniya atomê
124,937659 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,3 ± 0,7 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2002
parity+

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

126Pr

Hejmara baristeyî126
neutron number67
Giraniya atomê
125,93524 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,12 ± 0,18 s
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1983
parity

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

127Pr

Hejmara baristeyî127
neutron number68
Giraniya atomê
126,93071 ± 0,00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,2 ± 0,3 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1995
parity+

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

128Pr

Hejmara baristeyî128
neutron number69
Giraniya atomê
127,928791 ± 0,000032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,85 ± 0,09 s
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1985
parity+

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

129Pr

Hejmara baristeyî129
neutron number70
Giraniya atomê
128,925095 ± 0,000032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
30 ± 4 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1977
parity+

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

130Pr

Hejmara baristeyî130
neutron number71
Giraniya atomê
129,92359 ± 0,000069 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40 ± 0,4 s
spin6
nuclear quadrupole moment
dema îcadkirinê yan keşfê1977
parity

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

131Pr

Hejmara baristeyî131
neutron number72
Giraniya atomê
130,92023496 ± 0,000050451 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,5 ± 0,03 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1977
parity+

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

132Pr

Hejmara baristeyî132
neutron number73
Giraniya atomê
131,91924 ± 0,000031 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,49 ± 0,11 m
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1974
parity+

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

133Pr

Hejmara baristeyî133
neutron number74
Giraniya atomê
132,916330558 ± 0,000013416 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,5 ± 0,3 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1970
parity+

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

134Pr

Hejmara baristeyî134
neutron number75
Giraniya atomê
133,915696729 ± 0,00002181 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
17 ± 2 m
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1967
parity-

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

135Pr

Hejmara baristeyî135
neutron number76
Giraniya atomê
134,913111772 ± 0,000012686 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24 ± 1 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1954
parity+

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

136Pr

Hejmara baristeyî136
neutron number77
Giraniya atomê
135,91267747 ± 0,000012296 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
13,1 ± 0,1 m
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1968
parity+

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

137Pr

Hejmara baristeyî137
neutron number78
Giraniya atomê
136,910679183 ± 0,000008733 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,28 ± 0,03 h
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1958
parity+

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

138Pr

Hejmara baristeyî138
neutron number79
Giraniya atomê
137,910757495 ± 0,000010748 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,45 ± 0,05 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity+

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

139Pr

Hejmara baristeyî139
neutron number80
Giraniya atomê
138,9089327 ± 0,000003917 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,41 ± 0,04 h
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1951
parity+

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

140Pr

Hejmara baristeyî140
neutron number81
Giraniya atomê
139,9090856 ± 0,000006593 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,39 ± 0,01 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1938
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)48.7%
ϵ (electron capture)51.3%

141Pr

Hejmara baristeyî141
neutron number82
Giraniya atomê
140,907659604 ± 0,000001607 Da
g-factor
1,7064 ± 0,0012
natural abundance
100
radioactivitystable isotope
half-lifeNot Radioactive ☢️
spin5/2
nuclear quadrupole moment
-0,077 ± 0,006
dema îcadkirinê yan keşfê1924
parity+

142Pr

Hejmara baristeyî142
neutron number83
Giraniya atomê
141,91005164 ± 0,000001607 Da
g-factor
0,117 ± 0,0005
natural abundance
radioactivity☢️ radioactive element
half-life
19,12 ± 0,04 h
spin2
nuclear quadrupole moment
0,039 ± 0,017
dema îcadkirinê yan keşfê1935
parity-

decay modeintensity
β (β decay)100%
ϵ (electron capture)0.0164%

143Pr

Hejmara baristeyî143
neutron number84
Giraniya atomê
142,910822624 ± 0,000001949 Da
g-factor
0,77 ± 0,0014285714285714
natural abundance
radioactivity☢️ radioactive element
half-life
13,57 ± 0,02 d
spin7/2
nuclear quadrupole moment
0,77 ± 0,16
dema îcadkirinê yan keşfê1948
parity+

decay modeintensity
β (β decay)100%

144Pr

Hejmara baristeyî144
neutron number85
Giraniya atomê
143,913310682 ± 0,000002907 Da
g-factor
0
natural abundance
radioactivity☢️ radioactive element
half-life
17,28 ± 0,05 m
spin0
nuclear quadrupole moment
0
dema îcadkirinê yan keşfê1951
parity-

decay modeintensity
β (β decay)100%

145Pr

Hejmara baristeyî145
neutron number86
Giraniya atomê
144,914517987 ± 0,000007674 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5,984 ± 0,01 h
spin7/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1954
parity+

decay modeintensity
β (β decay)100%

146Pr

Hejmara baristeyî146
neutron number87
Giraniya atomê
145,91768763 ± 0,000036882 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24,09 ± 0,1 m
spin2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1953
parity-

decay modeintensity
β (β decay)100%

147Pr

Hejmara baristeyî147
neutron number88
Giraniya atomê
146,919007438 ± 0,00001702 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
13,39 ± 0,04 m
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1964
parity+

decay modeintensity
β (β decay)100%

148Pr

Hejmara baristeyî148
neutron number89
Giraniya atomê
147,922129992 ± 0,000016147 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,29 ± 0,02 m
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1964
parity-

decay modeintensity
β (β decay)100%

149Pr

Hejmara baristeyî149
neutron number90
Giraniya atomê
148,9237361 ± 0,0000106 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,26 ± 0,07 m
spin5/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1964
parity+

decay modeintensity
β (β decay)100%

150Pr

Hejmara baristeyî150
neutron number91
Giraniya atomê
149,926676391 ± 0,000009677 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6,19 ± 0,16 s
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1970
parity-

decay modeintensity
β (β decay)100%

151Pr

Hejmara baristeyî151
neutron number92
Giraniya atomê
150,928309066 ± 0,000012506 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
18,9 ± 0,07 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1990
parity-

decay modeintensity
β (β decay)100%

152Pr

Hejmara baristeyî152
neutron number93
Giraniya atomê
151,9315529 ± 0,0000199 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3,57 ± 0,11 s
spin4
nuclear quadrupole moment
dema îcadkirinê yan keşfê1983
parity+

decay modeintensity
β (β decay)100%

153Pr

Hejmara baristeyî153
neutron number94
Giraniya atomê
152,933903511 ± 0,000012755 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4,28 ± 0,11 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1987
parity-

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

154Pr

Hejmara baristeyî154
neutron number95
Giraniya atomê
153,937885165 ± 0,00010736 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2,3 ± 0,09 s
spin3
nuclear quadrupole moment
dema îcadkirinê yan keşfê1988
parity+

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

155Pr

Hejmara baristeyî155
neutron number96
Giraniya atomê
154,940509193 ± 0,000018462 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1,47 ± 0,3 s
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê1992
parity-

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

156Pr

Hejmara baristeyî156
neutron number97
Giraniya atomê
155,9447669 ± 0,0000011 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
444 ± 6 ms
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê1992
parity+

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

157Pr

Hejmara baristeyî157
neutron number98
Giraniya atomê
156,9480031 ± 0,0000034 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
307 ± 21 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity-

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

158Pr

Hejmara baristeyî158
neutron number99
Giraniya atomê
157,952603 ± 0,000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
181 ± 14 ms
spin5
nuclear quadrupole moment
dema îcadkirinê yan keşfê2016
parity-

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

159Pr

Hejmara baristeyî159
neutron number100
Giraniya atomê
158,956232 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
134 ± 43 ms
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity-

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

160Pr

Hejmara baristeyî160
neutron number101
Giraniya atomê
159,961138 ± 0,000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
170 ± 140 ms
spin1
nuclear quadrupole moment
dema îcadkirinê yan keşfê2017
parity+

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

161Pr

Hejmara baristeyî161
neutron number102
Giraniya atomê
160,965121 ± 0,000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
dema îcadkirinê yan keşfê2018
parity-

decay modeintensity
β (β decay)
β n (β-delayed neutron emission)
Praseodym 1

dîrok

kaşîf an îcadkerC.F. Aver von Welsbach
location of discoveryAustria
dema îcadkirinê yan keşfê1885
BêjenasîGreek: prasios and didymos (green twin); from its green salts.
pronunciationpra-si-eh-DIM-i-em (îngilîzî)

source

Abundance
Abundance in Earth's crust
9,2 mg/kg
natural abundance (Okyanûs)
0,00000064 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0,0000098 %
natural abundance (Roj)
0,0000001 %
Abundance in Universe
0,0000002 %

Nuclear Screening Constants

1s1.1694
2p4.2306
2s15.538
3d13.8476
3p19.1756
3s19.499
4d32.7028
4f37.8992
4p29.9432
4s28.6668
5p43.7165
5s41.387
6s51.2534