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Terbium vs Bismuth

Terbium
Bismuth
Bismuth vs Terbium


Periodic Table
Symbol
Tb   
Bi   
Group Number
Not Available   
15   
3
Period Number
6   
6   
Block
f block   
p block   
Element Family
Lanthanide   
Post-​Transition   
CAS Number
7440279   
99+
7440699   
22
Space Group Name
P63/mmc   
C12/m1   
Space Group Number
194.00   
5
12.00   
12
Facts
Interesting Facts
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  
  • Bismuth metal is soluble and reacts with concentrated nitric acid.
  • It oxides are used as a yellow pigment in paint. Bismuth chloride oxide BiClO gives a pearly texture to cosmetics.
  
Sources
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Carl Gustaf Mosander   
Claude François Geoffroy   
Discovery
In 1842   
In 1753   
Abundance
  
  
Abundance In Universe
5 * 10-8 %   
27
7 * 10-8 %   
25
Abundance In Sun
~0.00000001 %   
29
~0.000006 %   
14
Abundance In Meteorites
0.00 %   
99+
0.00 %   
99+
Abundance In Earth's Crust
0.00 %   
40
0.00 %   
99+
Abundance In Oceans
0.00 %   
99+
0.00 %   
24
Uses
Uses & Benefits
  • Terbium salts are used in optical devices like laser devices.
  • Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
  
  • Tin and bismuth alloys have a very low melting point and hence it is used in fire detector and the fire extinguishers. It also used in electric solders and fuses.
  
Industrial Uses
Electronic Industry   
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
Pharmaceutical Industry   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Low Toxic   
Low Toxic   
Present in Human Body
No   
Yes   
In Blood
Not Available   
0.02 Blood/mg dm-3   
20
In Bone
Not Available   
0.20 p.p.m.   
22
Physical Properties
Melting Point
1,356.00 °C   
33
271.30 °C   
99+
Boiling Point
3,123.00 °C   
29
1,560.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Silver   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
2.25   
15
Brinell Hardness
677.00 MPa   
17
70.00 MPa   
99+
Vickers Hardness
863.00 MPa   
13
Not Available   
Speed of Sound
2,620.00 m/s   
35
1,790.00 m/s   
99+
Optical Properties
  
  
Allotropes
No   
No   
α Allotropes
Not Available   
Not Available   
β Allotropes
Not Available   
Not Available   
γ Allotropes
Not Available   
Not Available   
Chemical Properties
Chemical Formula
Tb   
Bi   
Isotopes
  
  
Known Isotopes
26   
13
33   
6
Electronegativity
  
  
Pauling Electronegativity
Not Available   
2.02   
6
Sanderson Electronegativity
Not Available   
2.34   
3
Allred Rochow Electronegativity
1.10   
30
1.67   
6
Mulliken-Jaffe Electronegativity
Not Available   
2.15   
4
Allen Electronegativity
Not Available   
2.01   
4
Electropositivity
  
  
Pauling Electropositivity
Not Available   
1.98   
99+
Ionization Energies
  
  
1st Energy Level
603.40 kJ/mol   
99+
703.00 kJ/mol   
35
2nd Energy Level
1,174.80 kJ/mol   
99+
1,610.00 kJ/mol   
33
3rd Energy Level
2,417.00 kJ/mol   
99+
2,466.00 kJ/mol   
99+
4th Energy Level
4,203.00 kJ/mol   
31
4,370.00 kJ/mol   
28
5th Energy Level
Not Available   
5,400.00 kJ/mol   
30
6th Energy Level
Not Available   
8,520.00 kJ/mol   
19
Electrochemical Equivalent
1.98 g/amp-hr   
31
2.60 g/amp-hr   
19
Electron Work Function
3.00 eV   
36
4.22 eV   
22
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
65   
99+
83   
33
Electron Configuration
[Xe] 4f9 6s2   
[Xe] 4f14 5d10 6s2 6p3   
Crystal Structure
Hexagonal Close Packed (HCP)   
Rhombohedral (RHO)   
Crystal Lattice
HCP-Crystal-Structure-of-Terbium.jpg#100   
RHO-Crystal-Structure-of-Bismuth.jpg#100   
Atom
  
  
Number of Protons
65   
99+
83   
33
Number of Neutrons
94   
36
126   
18
Number of Electrons
65   
99+
83   
33
Radius of an Atom
  
  
Atomic Radius
177.00 pm   
17
156.00 pm   
29
Covalent Radius
194.00 pm   
16
148.00 pm   
36
Van der Waals Radius
221.00 pm   
22
207.00 pm   
26
Atomic Weight
158.93 amu   
99+
208.98 amu   
29
Atomic Volume
19.20 cm3/mol   
22
21.30 cm3/mol   
14
Adjacent Atomic Numbers
  
  
Previous Element
Gadolinium
  
Lead
  
Next Element
Dysprosium
  
Polonium
  
Valence Electron Potential
46.80 (-eV)   
33
41.90 (-eV)   
99+
Lattice Constant
360.10 pm   
36
667.40 pm   
2
Lattice Angles
π/2, π/2, 2 π/3   
NA   
Lattice C/A Ratio
1.58   
13
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
8.23 g/cm3   
99+
9.78 g/cm3   
39
Density When Liquid (at m.p.)
7.65 g/cm3   
30
10.05 g/cm3   
18
Tensile Strength
60.00 MPa   
17
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
29
Not Available   
Vapor Pressure at 2000 K
12.50 (Pa)   
8
Not Available   
Elasticity properties
  
  
Shear Modulus
22.10 GPa   
32
12.00 GPa   
99+
Bulk Modulus
38.70 GPa   
33
31.00 GPa   
38
Young's Modulus
55.70 GPa   
34
32.00 GPa   
99+
Poisson Ratio
0.26   
21
0.33   
11
Other Mechanical Properties
Ductile, Malleable   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
8.23   
39
9.79   
30
Magnetic Ordering
Paramagnetic   
Diamagnetic   
Permeability
Not Available   
0.00 H/m   
6
Susceptibility
Not Available   
0.00   
6
Electrical Properties
  
  
Electrical Property
Conductor   
Semiconductor   
Resistivity
1.15 nΩ·m   
99+
1.29 nΩ·m   
99+
Electrical Conductivity
0.01 106/cm Ω   
99+
0.01 106/cm Ω   
99+
Electron Affinity
50.00 kJ/mol   
21
91.20 kJ/mol   
11
Thermal Properties
Specific Heat
0.18 J/(kg K)   
33
0.12 J/(kg K)   
40
Molar Heat Capacity
28.91 J/mol·K   
9
25.52 J/mol·K   
37
Thermal Conductivity
11.10 W/m·K   
99+
7.97 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
10.30 µm/(m·K)   
38
13.40 µm/(m·K)   
28
Enthalpy
  
  
Enthalpy of Vaporization
330.90 kJ/mol   
26
151.00 kJ/mol   
99+
Enthalpy of Fusion
10.80 kJ/mol   
34
10.90 kJ/mol   
33
Enthalpy of Atomization
314.00 kJ/mol   
33
207.10 kJ/mol   
99+
Standard Molar Entropy
73.20 J/mol.K   
10
56.70 J/mol.K   
24
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