Praseodimju[m]

Praseodimju[m] (Pr)

element with the atomic number of 59
Atomic Number59
Atomic Weight140.90766
mass number141
Group
Period6
Blockf
proton59 p+
neutron82 n0
elettron59 e-
Animated Bohr model of Pr (Praseodimju[m])

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
densità
6.773 g/cm³
Atomic Radii Of The Elements: Praseodimju[m]0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Chemical Property

enerġija
proton affinity
electron affinity
ionization energy
ionization energy of Pr (Praseodimju[m])
enthalpy of vaporization
331 kJ/mol
enthalpy of fusion
11.3 kJ/mol
standard enthalpy of formation
356.9 kJ/mol
elettron
electron shell2, 8, 18, 21, 8, 2
Bohr model: Pr (Praseodimju[m])
valence electron2
Lewis structure: Pr (Praseodimju[m])
electron configuration[Xe] 4f3 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f3 6s2
Enhanced Bohr model of Pr (Praseodimju[m])
Orbital Diagram of Pr (Praseodimju[m])
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
kulur
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
Curie temperature
Néel temperature
structure
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
speed of sound
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

mass number121
neutron number62
relative atomic mass
120.955393 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
12 ± 5 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention2005
parity

decay modeintensity
p (proton emission)100%

122Pr

mass number122
neutron number63
relative atomic mass
121.951927 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin
nuclear quadrupole moment
time of discovery or invention
parity

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

123Pr

mass number123
neutron number64
relative atomic mass
122.946076 ± 0.000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
time of discovery or invention
parity+

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

124Pr

mass number124
neutron number65
relative atomic mass
123.94294 ± 0.00043 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.2 ± 0.2 s
spin
nuclear quadrupole moment
time of discovery or invention1986
parity

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

125Pr

mass number125
neutron number66
relative atomic mass
124.937659 ± 0.000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.3 ± 0.7 s
spin3/2
nuclear quadrupole moment
time of discovery or invention2002
parity+

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

126Pr

mass number126
neutron number67
relative atomic mass
125.93524 ± 0.00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.12 ± 0.18 s
spin4
nuclear quadrupole moment
time of discovery or invention1983
parity

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

127Pr

mass number127
neutron number68
relative atomic mass
126.93071 ± 0.00021 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4.2 ± 0.3 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1995
parity+

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

128Pr

mass number128
neutron number69
relative atomic mass
127.928791 ± 0.000032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.85 ± 0.09 s
spin3
nuclear quadrupole moment
time of discovery or invention1985
parity+

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

129Pr

mass number129
neutron number70
relative atomic mass
128.925095 ± 0.000032 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
30 ± 4 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1977
parity+

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

130Pr

mass number130
neutron number71
relative atomic mass
129.92359 ± 0.000069 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
40 ± 0.4 s
spin6
nuclear quadrupole moment
time of discovery or invention1977
parity

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

131Pr

mass number131
neutron number72
relative atomic mass
130.92023496 ± 0.000050451 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.5 ± 0.03 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1977
parity+

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

132Pr

mass number132
neutron number73
relative atomic mass
131.91924 ± 0.000031 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.49 ± 0.11 m
spin2
nuclear quadrupole moment
time of discovery or invention1974
parity+

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

133Pr

mass number133
neutron number74
relative atomic mass
132.916330558 ± 0.000013416 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6.5 ± 0.3 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1970
parity+

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

134Pr

mass number134
neutron number75
relative atomic mass
133.915696729 ± 0.00002181 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
17 ± 2 m
spin2
nuclear quadrupole moment
time of discovery or invention1967
parity-

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

135Pr

mass number135
neutron number76
relative atomic mass
134.913111772 ± 0.000012686 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24 ± 1 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1954
parity+

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

136Pr

mass number136
neutron number77
relative atomic mass
135.91267747 ± 0.000012296 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
13.1 ± 0.1 m
spin2
nuclear quadrupole moment
time of discovery or invention1968
parity+

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

137Pr

mass number137
neutron number78
relative atomic mass
136.910679183 ± 0.000008733 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.28 ± 0.03 h
spin5/2
nuclear quadrupole moment
time of discovery or invention1958
parity+

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

138Pr

mass number138
neutron number79
relative atomic mass
137.910757495 ± 0.000010748 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.45 ± 0.05 m
spin1
nuclear quadrupole moment
time of discovery or invention1951
parity+

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

139Pr

mass number139
neutron number80
relative atomic mass
138.9089327 ± 0.000003917 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4.41 ± 0.04 h
spin5/2
nuclear quadrupole moment
time of discovery or invention1951
parity+

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

140Pr

mass number140
neutron number81
relative atomic mass
139.9090856 ± 0.000006593 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.39 ± 0.01 m
spin1
nuclear quadrupole moment
time of discovery or invention1938
parity+

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

141Pr

mass number141
neutron number82
relative atomic mass
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
time of discovery or invention1924
parity+

142Pr

mass number142
neutron number83
relative atomic mass
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
time of discovery or invention1935
parity-

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

143Pr

mass number143
neutron number84
relative atomic mass
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
time of discovery or invention1948
parity+

decay modeintensity
β (β decay)100%

144Pr

mass number144
neutron number85
relative atomic mass
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
time of discovery or invention1951
parity-

decay modeintensity
β (β decay)100%

145Pr

mass number145
neutron number86
relative atomic mass
144.914517987 ± 0.000007674 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
5.984 ± 0.01 h
spin7/2
nuclear quadrupole moment
time of discovery or invention1954
parity+

decay modeintensity
β (β decay)100%

146Pr

mass number146
neutron number87
relative atomic mass
145.91768763 ± 0.000036882 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
24.09 ± 0.1 m
spin2
nuclear quadrupole moment
time of discovery or invention1953
parity-

decay modeintensity
β (β decay)100%

147Pr

mass number147
neutron number88
relative atomic mass
146.919007438 ± 0.00001702 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
13.39 ± 0.04 m
spin3/2
nuclear quadrupole moment
time of discovery or invention1964
parity+

decay modeintensity
β (β decay)100%

148Pr

mass number148
neutron number89
relative atomic mass
147.922129992 ± 0.000016147 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.29 ± 0.02 m
spin1
nuclear quadrupole moment
time of discovery or invention1964
parity-

decay modeintensity
β (β decay)100%

149Pr

mass number149
neutron number90
relative atomic mass
148.9237361 ± 0.0000106 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.26 ± 0.07 m
spin5/2
nuclear quadrupole moment
time of discovery or invention1964
parity+

decay modeintensity
β (β decay)100%

150Pr

mass number150
neutron number91
relative atomic mass
149.926676391 ± 0.000009677 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
6.19 ± 0.16 s
spin1
nuclear quadrupole moment
time of discovery or invention1970
parity-

decay modeintensity
β (β decay)100%

151Pr

mass number151
neutron number92
relative atomic mass
150.928309066 ± 0.000012506 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
18.9 ± 0.07 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1990
parity-

decay modeintensity
β (β decay)100%

152Pr

mass number152
neutron number93
relative atomic mass
151.9315529 ± 0.0000199 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
3.57 ± 0.11 s
spin4
nuclear quadrupole moment
time of discovery or invention1983
parity+

decay modeintensity
β (β decay)100%

153Pr

mass number153
neutron number94
relative atomic mass
152.933903511 ± 0.000012755 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
4.28 ± 0.11 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1987
parity-

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

154Pr

mass number154
neutron number95
relative atomic mass
153.937885165 ± 0.00010736 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
2.3 ± 0.09 s
spin3
nuclear quadrupole moment
time of discovery or invention1988
parity+

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

155Pr

mass number155
neutron number96
relative atomic mass
154.940509193 ± 0.000018462 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
1.47 ± 0.3 s
spin3/2
nuclear quadrupole moment
time of discovery or invention1992
parity-

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

156Pr

mass number156
neutron number97
relative atomic mass
155.9447669 ± 0.0000011 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
444 ± 6 ms
spin1
nuclear quadrupole moment
time of discovery or invention1992
parity+

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

157Pr

mass number157
neutron number98
relative atomic mass
156.9480031 ± 0.0000034 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
307 ± 21 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention2017
parity-

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

158Pr

mass number158
neutron number99
relative atomic mass
157.952603 ± 0.000322 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
181 ± 14 ms
spin5
nuclear quadrupole moment
time of discovery or invention2016
parity-

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

159Pr

mass number159
neutron number100
relative atomic mass
158.956232 ± 0.000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
134 ± 43 ms
spin3/2
nuclear quadrupole moment
time of discovery or invention2017
parity-

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

160Pr

mass number160
neutron number101
relative atomic mass
159.961138 ± 0.000429 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
170 ± 140 ms
spin1
nuclear quadrupole moment
time of discovery or invention2017
parity+

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

161Pr

mass number161
neutron number102
relative atomic mass
160.965121 ± 0.000537 Da
g-factor
natural abundance
radioactivity☢️ radioactive element
half-life
spin3/2
nuclear quadrupole moment
time of discovery or invention2018
parity-

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

storja

discoverer or inventorC.F. Aver von Welsbach
location of discoveryAustria
time of discovery or invention1885
etimoloġijaGreek: prasios and didymos (green twin); from its green salts.
pronunciationpra-si-eh-DIM-i-em (Ingliż)

source

Abundance
Abundance in Earth's crust
9.2 mg/kg
natural abundance (ocean)
0.00000064 mg/L
natural abundance (human body)
natural abundance (meteoroid)
0.0000098 %
natural abundance (Xemx)
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