65
Tb
Terbium
158.925352
Basic Information
Bohr Model
Descriptive Numbers
Mass
Periodic Position
Classification
Abundance
Color
Atomic Radius
Temperature
Density
Heat
Speed of Sound
Electrical Resistance
Magnetic Properties
Elasticity
Hardness
Etymology
Discovery & Isolation
Production & Use
Radioactivity
Electron Affinity
Dipole Polarity
Lattice
Electron & Quantum
List of Compounds
Basic Information
Bohr Model
Static
Interactive
Descriptive Numbers
CAS Number
7440-27-9
CID Number
CID23958
Mendeleev Number
29
Pettifor Number
26
Space Group Number
194
Glawe Number
25
Mass
Atomic Mass
158.925352 Da
Uncertainty
0.00002
Periodic Position
X Position
12
Y Position
8
Period
6
Group
N/A
Classification
Block
f
Category
Lanthanides
Geochemical
Rare Earth and Similars
Goldschmidt
Lithophilic
Electrical Type
Conductive
Abundance
Seawater
1.4e-13 kg/L
Sun
2e-8 mole ratio to silicon
Earth Crust
0.0000012 g
Solar System
6e-8 mole ratio to silicon
Meteorites
0.0000039 %
Color
Jmol
#30FFC7
Molcas Gv
#30FFC7
CPK
#FF1493
Atomic Radius
Empirical
175
Calculated
225
Rahm
276
Uff
345.1
Mm3
270
Alvarez
279
Covalent (Cordero)
194
Covalent (Pyykko)
168
Covalent (Pyykko Double)
135
Metallic
177.3
Temperature
Melting/Freeze (USE)
1629 °K
Melting/Freeze (WEL)
1629 °K
Melting/Freeze (CRC)
1629 °K
Melting/Freeze (LNG)
1629 °K
Boiling/Density (USE)
3396 °K
Boiling/Density (WEL)
3503 °K
Boiling/Density (CRC)
3503 °K
Boiling/Density (LNG)
3503 °K
Boiling/Density (Zhang)
3396 °K
Curie Point
222 Tc
Density
STP
8.23 kg/cm³
Solid (WEL)
8219 kg/cm³
Solid (CRC)
8230 kg/cm³
Solid (LNG)
8230 kg/cm³
Liquid (CR2)
7650 kg/cm³
Heat
Molar Volume
19.3 cm³/mol
Atomic Volume
19.2 cm³
Heat Of Fusion CRC
10.15 kJ/mol
Heat Of Fusion LNG
10.15 kJ/mol
Heat Of Fusion WEL
10.8 kJ/mol
Evaporation USE
389 kJ/mol
Evaporation LNG
293 kJ/mol
Evaporation WEL
295 kJ/mol
Evaporation Zhang
391 kJ/mol
Molar Heat
28.91 J/molK
Heat Capacity USE
0.183 J/gK
Heat Capacity CRC
28.91 J/gK
Heat Capacity LNG
28.91 J/gK
Heat Capacity WEL
28.9 J/gK
Thermal Conductivity
11.1 W/m*K
Thermal Expansion
0.0000103 1/K
Adiabatic Index
N/A
Speed of Sound
Extensional
2620 m/s
Electrical Resistance
293k
1150 nΩm
Magnetic Properties
Order
paramanyetic
Neel Point
230 Tn
Susceptibility
0.0000136 m3/kg
Elasticity
Shear Modulus
22.1 GPa
Bulk Modulus
38.7 GPa
Poisson Ratio
0.261 ν
Youngs Modulus
55.7 GPa
Hardness
Brinell
677–1200
Vickers
450–863
Etymology
Description
Silvery is the metal element found among the lanthanides. Tb-159 is the only stable isotope. There are 17 artificial isotopes. G.G. It was discovered by Mosander in 1843.
Language Of Origin
Swedish
Origin Of Word
From the town of Ytterby in Sweden
Meaning
Proper noun (literal meaning: "remote town")
Symbol Origin
place name
Etymological Description
It is named after the town of Ytterby in Sweden, where the element was first discovered.
Discovery & Isolation
Observed/Predicted By
Mr. Mosander
Observed/Discovery Year
1843
Discovery Location
Isolated Sample By
J.C.G. of Marignac
Isolated Sample Year
1886
Production & Use
Sources
It is found in monazite sand containing 0.03% terbium along with other soil elements. It can also be obtained from xenotime and euxenite, both of which are oxide mixtures containing up to 1% terbium.
Uses
It is used in small amounts in special lasers and solid-state devices.
Radioactivity
Half Life
Stable
Lifetime
Stable
Neutron Mass Absorption
0.009
Neutron Cross Section
23
Electron Affinity
Electron Affinity (eV)
1.165
Electron Affinity (kJ/mol)
112.4
Electron Affinity (pauling)
1.1
Electron Affinity (ghosh)
0.198863
Dipole Polarity
Accepted
170
Uncertainty
20
C6 GB
2590
Lattice
Constant Internal Default Radius
3.6
Strucutre
HEX
Angles
π/2, π/2, 2 π/3
Electron & Quantum
Oxidation States
0,1,2,3,4
Electron Configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f9
Quantum Number
6H15/2
Electron Configuration Semantic
[Car] 4f9 6s2
Shells-0
2
Shells-1
8
Shells-2
18
Shells-3
27
Shells-4
8
Shells-5
2
Ionization Energies-0
565.8
Ionization Energies-1
1110
Ionization Energies-2
2114
Ionization Energies-3
3839
List of Compounds
1-10 of 27 compounds
| Formula | Names |
|---|---|
| Tb | terbium terbium metal |
| TbBr3 | terbium(III)bromide tribromoterbium |
| TbCl3 | terbium(III)chloride trichloroterbium |
| TbF3 | terbium fluoride terbium(III) fluoride terbium trifluoride trifluoroterbium |
| TbI3 | terbium(III)iodide triiodoterbium |
| NTb | terbium nitride |
| Tb2O3 | terbium(III)oxide |
| Tb4O7 | terbium(III,IV)oxide |
| TbSb | terbium antimonide antimony, compound with terbium (1:1) |
| TbF4 | terbium(IV) fluoride |
