Terbi

Terbi (Tb)

element with the atomic number of 65
Atomic Number65
Atomic Weight158.92535
Rhif màs159
Group
Period6
Blockf
Proton65 p+
Niwtron94 n0
Electron65 e-
Animated Bohr model of Tb (Terbi)

Nodwedd Ffisegol

Atomic Radius
175 pm
molar volume
covalent radius
168 pm
Metallic Radius
ionic radius
92.3 pm
Crystal Radius
106.3 pm
Van der Waals radius
233 pm
density
8.23 g/cm³
Atomic Radii Of The Elements: Terbi0102030405060708090100110120130140150160170180190200210220230240pmAtomic RadiusCovalent RadiusMetallic RadiusVan der Waals radius

Nodwedd Gemegol

egni
proton affinity
electron affinity
ionization energy
ionization energy of Tb (Terbi)
enthalpy of vaporization
389 kJ/mol
enthalpy of fusion
standard enthalpy of formation
388.7 kJ/mol
Electron
plisgyn yr electron2, 8, 18, 27, 8, 2
Bohr model: Tb (Terbi)
valence electron2
Lewis structure: Tb (Terbi)
trefn yr electronnau[Xe] 4f9 6s2
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f9 6s2
Enhanced Bohr model of Tb (Terbi)
Orbital Diagram of Tb (Terbi)
Cyflwr ocsidiad0, 1, 2, 3, 4
Electronegatifedd
Electrophilicity Index
1.3142725121307568 eV/particle
cyflwr sylfaenol mater
cyflwr materSolid
gaseous state of matter
Boiling Point
3,503.15 K
Melting Point
1,632.15 K
critical pressure
critical temperature
triple point
appearance
lliw
Silver
appearancesilvery white
Mynegrif plygiant
nodwedd ffisegol gwrthrych
Thermal Conductivity
11.1 W/(m K)
thermal expansion
0.0000103 1/K
molar heat capacity
28.91 J/(mol K)
Specific Heat Capacity
0.182 J/(g⋅K)
heat capacity ratio
electrical properties
typeConductor
dargludedd trydanol
0.83 MS/m
Gwrthedd
0.0000012 m Ω
superconductivity
magnetism
typeparamagnetic
magnetic susceptibility (Mass)
0.0000136 m³/Kg
magnetic susceptibility (Molar)
0.000002161385 m³/mol
magnetic susceptibility (Volume)
0.1117784
magnetic ordering
Curie temperature
222 K
Néel temperature
230 K
strwythur
Crystal StructureSimple Hexagonal (HEX)
lattice constant
3.6 Å
Lattice Anglesπ/2, π/2, 2 π/3
nodwedd mecanyddol deunyddiau
hardness
bulk modulus
38.7 GPa
shear modulus
22 GPa
Young's modulus
56 GPa
Poisson's ratio
0.26
speed of sound
2,620 m/s
classification
CategoryLanthanides, Lanthanides
CAS Group
IUPAC Group
Glawe Number25
Mendeleev Number29
Pettifor Number26
Geochemical Classrare earth & related
Goldschmidt classificationlitophile

other

Gas Basicity
polarizability
170 ± 20 a₀
C6 Dispersion Coefficient
allotrope
Neutron cross section
23
Neutron Mass Absorption
0.009
quantum number6H15/2
space group194 (P63/mmc)

Isotopes of Terbium

Stable Isotopes1
Unstable Isotopes39
Natural Isotopes1

135Tb

Rhif màs135
neutron number70
relative atomic mass
134.964516 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.01 ± 0.28 ms
spin7/2
nuclear quadrupole moment
dyddiad darganfod2004
parity-

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

136Tb

Rhif màs136
neutron number71
relative atomic mass
135.96146 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin5
nuclear quadrupole moment
dyddiad darganfod
parity-

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

137Tb

Rhif màs137
neutron number72
relative atomic mass
136.95602 ± 0.00043 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod
parity+

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

138Tb

Rhif màs138
neutron number73
relative atomic mass
137.953193 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin2
nuclear quadrupole moment
dyddiad darganfod1993
parity+

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

139Tb

Rhif màs139
neutron number74
relative atomic mass
138.94833 ± 0.00032 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.6 ± 0.2 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1999
parity-

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

140Tb

Rhif màs140
neutron number75
relative atomic mass
139.945805048 ± 0.000859359 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.29 ± 0.15 s
spin7
nuclear quadrupole moment
dyddiad darganfod1986
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
ϵ (electron capture)3%
β+ p (β+-delayed proton emission)0.26%

141Tb

Rhif màs141
neutron number76
relative atomic mass
140.941448 ± 0.000113 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.5 ± 0.2 s
spin5/2
nuclear quadrupole moment
dyddiad darganfod1986
parity-

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

142Tb

Rhif màs142
neutron number77
relative atomic mass
141.939280858 ± 0.000752079 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
597 ± 17 ms
spin1
nuclear quadrupole moment
dyddiad darganfod1991
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)100%
e+ (positron emission)96.8%
ϵ (electron capture)3.2%
β+ p (β+-delayed proton emission)0.0022%

143Tb

Rhif màs143
neutron number78
relative atomic mass
142.935137332 ± 0.000055 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
12 ± 1 s
spin11/2
nuclear quadrupole moment
dyddiad darganfod1985
parity-

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

144Tb

Rhif màs144
neutron number79
relative atomic mass
143.933045 ± 0.00003 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin1
nuclear quadrupole moment
dyddiad darganfod1982
parity+

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

145Tb

Rhif màs145
neutron number80
relative atomic mass
144.928717001 ± 0.000119051 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
30.9 ± 0.6 s
spin11/2
nuclear quadrupole moment
dyddiad darganfod1981
parity-

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

146Tb

Rhif màs146
neutron number81
relative atomic mass
145.927252739 ± 0.000048159 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
8 ± 4 s
spin1
nuclear quadrupole moment
dyddiad darganfod1974
parity+

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

147Tb

Rhif màs147
neutron number82
relative atomic mass
146.92405462 ± 0.000008691 Da
g-factor
3.42 ± 0.1
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.64 ± 0.03 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1969
parity+

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

148Tb

Rhif màs148
neutron number83
relative atomic mass
147.924275476 ± 0.000013379 Da
g-factor
-0.88 ± 0.01
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
60 ± 1 m
spin2
nuclear quadrupole moment
-0.3 ± 0.2
dyddiad darganfod1960
parity-

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

149Tb

Rhif màs149
neutron number84
relative atomic mass
148.923253792 ± 0.000003895 Da
g-factor
2.72 ± 0.04
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
4.118 ± 0.025 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1950
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)83.3%
α (α emission)16.7%

150Tb

Rhif màs150
neutron number85
relative atomic mass
149.923664799 ± 0.000007912 Da
g-factor
-0.45 ± 0.01
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3.48 ± 0.16 h
spin2
nuclear quadrupole moment
dyddiad darganfod1959
parity

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

151Tb

Rhif màs151
neutron number86
relative atomic mass
150.92310897 ± 0.000004395 Da
g-factor
1.852 ± 0.012
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17.609 ± 0.001 h
spin1/2
nuclear quadrupole moment
0
dyddiad darganfod1953
parity+

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)99.9905%
α (α emission)0.0095%

152Tb

Rhif màs152
neutron number87
relative atomic mass
151.924081855 ± 0.000042955 Da
g-factor
-0.29 ± 0.01
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
17.5 ± 0.1 h
spin2
nuclear quadrupole moment
0.34 ± 0.13
dyddiad darganfod1959
parity-

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

153Tb

Rhif màs153
neutron number88
relative atomic mass
152.923441694 ± 0.000004237 Da
g-factor
1.388 ± 0.008
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.34 ± 0.01 d
spin5/2
nuclear quadrupole moment
1.08 ± 0.14
dyddiad darganfod1957
parity+

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

154Tb

Rhif màs154
neutron number89
relative atomic mass
153.924683681 ± 0.000048641 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.994 ± 0.039 h
spin3
nuclear quadrupole moment
dyddiad darganfod1972
parity-

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

155Tb

Rhif màs155
neutron number90
relative atomic mass
154.923509511 ± 0.000010552 Da
g-factor
1.3533333333333 ± 0.013333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.32 ± 0.06 d
spin3/2
nuclear quadrupole moment
1.41 ± 0.06
dyddiad darganfod1957
parity+

decay modeintensity
ϵ (electron capture)100%

156Tb

Rhif màs156
neutron number91
relative atomic mass
155.924754209 ± 0.000004044 Da
g-factor
0.56666666666667 ± 0.066666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.35 ± 0.1 d
spin3
nuclear quadrupole moment
2.3 ± 0.8
dyddiad darganfod1950
parity-

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

157Tb

Rhif màs157
neutron number92
relative atomic mass
156.924031888 ± 0.000001092 Da
g-factor
1.3533333333333 ± 0.013333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
71 ± 7 y
spin3/2
nuclear quadrupole moment
1.4 ± 0.08
dyddiad darganfod1960
parity+

decay modeintensity
ϵ (electron capture)100%

158Tb

Rhif màs158
neutron number93
relative atomic mass
157.925419942 ± 0.00000136 Da
g-factor
0.58433333333333 ± 0.0023333333333333
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
180 ± 11 y
spin3
nuclear quadrupole moment
dyddiad darganfod1957
parity-

decay modeintensity
β+ (β+ decay; β+ = ϵ + e+)83.4%
β (β decay)16.6%

159Tb

Rhif màs159
neutron number94
relative atomic mass
158.925353707 ± 0.000001184 Da
g-factor
1.3393333333333 ± 0.0026666666666667
natural abundance
100
Dadfeilio ymbelydrolstable isotope
Hanner oesNot Radioactive ☢️
spin3/2
nuclear quadrupole moment
1.432 ± 0.008
dyddiad darganfod1933
parity+

160Tb

Rhif màs160
neutron number95
relative atomic mass
159.927174553 ± 0.000001191 Da
g-factor
0.566 ± 0.0026666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
72.3 ± 0.2 d
spin3
nuclear quadrupole moment
3.85 ± 0.05
dyddiad darganfod1943
parity-

decay modeintensity
β (β decay)100%

161Tb

Rhif màs161
neutron number96
relative atomic mass
160.927576806 ± 0.000001308 Da
g-factor
1.4666666666667 ± 0.066666666666667
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
6.948 ± 0.005 d
spin3/2
nuclear quadrupole moment
1.3 ± 0.6
dyddiad darganfod1949
parity+

decay modeintensity
β (β decay)100%

162Tb

Rhif màs162
neutron number97
relative atomic mass
161.9292754 ± 0.0000022 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
7.6 ± 0.15 m
spin1
nuclear quadrupole moment
dyddiad darganfod1965
parity-

decay modeintensity
β (β decay)100%

163Tb

Rhif màs163
neutron number98
relative atomic mass
162.930653609 ± 0.000004358 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
19.5 ± 0.3 m
spin3/2
nuclear quadrupole moment
dyddiad darganfod1966
parity+

decay modeintensity
β (β decay)100%

164Tb

Rhif màs164
neutron number99
relative atomic mass
163.933327561 ± 0.000002 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
3 ± 0.1 m
spin5
nuclear quadrupole moment
dyddiad darganfod1968
parity+

decay modeintensity
β (β decay)100%

165Tb

Rhif màs165
neutron number100
relative atomic mass
164.934955198 ± 0.000001654 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
2.11 ± 0.1 m
spin3/2
nuclear quadrupole moment
dyddiad darganfod1983
parity+

decay modeintensity
β (β decay)100%

166Tb

Rhif màs166
neutron number101
relative atomic mass
165.937939727 ± 0.00000157 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
27.1 ± 1.5 s
spin1
nuclear quadrupole moment
dyddiad darganfod1996
parity-

decay modeintensity
β (β decay)100%

167Tb

Rhif màs167
neutron number102
relative atomic mass
166.940007046 ± 0.000002071 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
18.9 ± 1.6 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod1999
parity+

decay modeintensity
β (β decay)100%

168Tb

Rhif màs168
neutron number103
relative atomic mass
167.943337074 ± 0.0000045 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
9.4 ± 0.4 s
spin4
nuclear quadrupole moment
dyddiad darganfod1999
parity-

decay modeintensity
β (β decay)100%

169Tb

Rhif màs169
neutron number104
relative atomic mass
168.945807 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
5.13 ± 0.32 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod2012
parity+

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

170Tb

Rhif màs170
neutron number105
relative atomic mass
169.949855 ± 0.000322 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
960 ± 78 ms
spin2
nuclear quadrupole moment
dyddiad darganfod2012
parity-

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

171Tb

Rhif màs171
neutron number106
relative atomic mass
170.953011 ± 0.000429 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
1.23 ± 0.1 s
spin3/2
nuclear quadrupole moment
dyddiad darganfod2012
parity+

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

172Tb

Rhif màs172
neutron number107
relative atomic mass
171.957391 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
760 ± 190 ms
spin6
nuclear quadrupole moment
dyddiad darganfod2012
parity+

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

173Tb

Rhif màs173
neutron number108
relative atomic mass
172.960805 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin3/2
nuclear quadrupole moment
dyddiad darganfod2018
parity+

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

174Tb

Rhif màs174
neutron number109
relative atomic mass
173.965679 ± 0.000537 Da
g-factor
natural abundance
Dadfeilio ymbelydrol☢️ elfen ymbelydrol
Hanner oes
spin2
nuclear quadrupole moment
dyddiad darganfod2018
parity-

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

hanes

darganfyddwr neu ddyfeisiwrCarl Mosander
man darganfodSweden
dyddiad darganfod1843
geirdarddiadNamed after Ytterby, a village in Sweden.
ynganiadTUR-bi-em (Saesneg)

source

Abundance
Abundance in Earth's crust
1.2 mg/kg
natural abundance (cefnfor)
0.00000014 mg/L
natural abundance (corff dynol)
natural abundance (Awyrfaen)
0.0000039 %
natural abundance (Haul)
0.00000001 %
Abundance in Universe
0.00000005 %

Nuclear Screening Constants

1s1.2739
2p4.3076
2s17.0278
3d13.7015
3p19.9853
3s20.4485
4d34.69
4f39.1352
4p31.6012
4s30.98
5p48.039
5s45.8295
6s56.6996