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Bismuth Terbium Comparison


Terbium Bismuth comparison


Periodic Table

Symbol
Bi   
Tb   

Group Number
15   
3
Not Available   

Period Number
6   
6   

Block
p block   
f block   

Element Family
Post-​Transition   
Lanthanide   

CAS Number
7440699   
22
7440279   
99+

Space Group Name
C12/m1   
P63/mmc   

Space Group Number
12.00   
12
194.00   
5

Facts

Interesting Facts
  • 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.
  
  • At times Terbium metal acts same as Calcium.
  • Terbium metal closely similar to Lanthanum metal.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Found in Minerals, Found with Other Rare Earth Metals, Mining, Ores of Minerals   

History
  
  

Who Discovered
Claude François Geoffroy   
Carl Gustaf Mosander   

Discovery
In 1753   
In 1842   

Abundance
  
  

Abundance In Universe
7 * 10-8 %   
25
5 * 10-8 %   
27

Abundance In Sun
~0.000006 %   
14
~0.00000001 %   
29

Abundance In Meteorites
0.00 %   
99+
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
99+
0.00 %   
40

Abundance In Oceans
0.00 %   
24
0.00 %   
99+

Uses

Uses & Benefits
  • 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.
  
  • Terbium salts are used in optical devices like laser devices.
  • Terbium’s alloy lengthens and shortens the magnetic field and this effect forms loudspeaker.
  

Industrial Uses
Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Electronic Industry   

Medical Uses
Pharmaceutical Industry   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Low Toxic   
Low Toxic   

Present in Human Body
Yes   
No   

In Blood
0.02 Blood/mg dm-3   
20
Not Available   

In Bone
0.20 p.p.m.   
22
Not Available   

Physical Properties

Melting Point
271.30 °C   
99+
1,356.00 °C   
33

Boiling Point
1,560.00 °C   
99+
3,123.00 °C   
29

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silver   
Silvery White   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
2.25   
15
Not Available   

Brinell Hardness
70.00 MPa   
99+
677.00 MPa   
17

Vickers Hardness
Not Available   
863.00 MPa   
13

Speed of Sound
1,790.00 m/s   
99+
2,620.00 m/s   
35

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
Bi   
Tb   

Isotopes
  
  

Known Isotopes
33   
6
26   
13

Electronegativity
  
  

Pauling Electronegativity
2.02   
6
Not Available   

Sanderson Electronegativity
2.34   
3
Not Available   

Allred Rochow Electronegativity
1.67   
6
1.10   
30

Mulliken-Jaffe Electronegativity
2.15   
4
Not Available   

Allen Electronegativity
2.01   
4
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.98   
99+
Not Available   

Ionization Energies
  
  

1st Energy Level
703.00 kJ/mol   
35
603.40 kJ/mol   
99+

2nd Energy Level
1,610.00 kJ/mol   
33
1,174.80 kJ/mol   
99+

3rd Energy Level
2,466.00 kJ/mol   
99+
2,417.00 kJ/mol   
99+

4th Energy Level
4,370.00 kJ/mol   
28
4,203.00 kJ/mol   
31

5th Energy Level
5,400.00 kJ/mol   
30
Not Available   

6th Energy Level
8,520.00 kJ/mol   
19
Not Available   

Electrochemical Equivalent
2.60 g/amp-hr   
19
1.98 g/amp-hr   
31

Electron Work Function
4.22 eV   
22
3.00 eV   
36

Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   

Atomic Properties

Atomic Number
83   
33
65   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2 6p3   
[Xe] 4f9 6s2   

Crystal Structure
Rhombohedral (RHO)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
RHO-Crystal-Structure-of-Bismuth.jpg#100   
HCP-Crystal-Structure-of-Terbium.jpg#100   

Atom
  
  

Number of Protons
83   
33
65   
99+

Number of Neutrons
126   
18
94   
36

Number of Electrons
83   
33
65   
99+

Radius of an Atom
  
  

Atomic Radius
156.00 pm   
29
177.00 pm   
17

Covalent Radius
148.00 pm   
36
194.00 pm   
16

Van der Waals Radius
207.00 pm   
26
221.00 pm   
22

Atomic Weight
208.98 amu   
29
158.93 amu   
99+

Atomic Volume
21.30 cm3/mol   
14
19.20 cm3/mol   
22

Adjacent Atomic Numbers
  
  

Previous Element
Lead
  
Gadolinium
  

Next Element
Polonium
  
Dysprosium
  

Valence Electron Potential
41.90 (-eV)   
99+
46.80 (-eV)   
33

Lattice Constant
667.40 pm   
2
360.10 pm   
36

Lattice Angles
NA   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.58   
13

Mechanical Properties

Density
  
  

Density At Room Temperature
9.78 g/cm3   
39
8.23 g/cm3   
99+

Density When Liquid (at m.p.)
10.05 g/cm3   
18
7.65 g/cm3   
30

Tensile Strength
Not Available   
60.00 MPa   
17

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
29

Vapor Pressure at 2000 K
Not Available   
12.50 (Pa)   
8

Elasticity properties
  
  

Shear Modulus
12.00 GPa   
99+
22.10 GPa   
32

Bulk Modulus
31.00 GPa   
38
38.70 GPa   
33

Young's Modulus
32.00 GPa   
99+
55.70 GPa   
34

Poisson Ratio
0.33   
11
0.26   
21

Other Mechanical Properties
NA   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
9.79   
30
8.23   
39

Magnetic Ordering
Diamagnetic   
Paramagnetic   

Permeability
0.00 H/m   
6
Not Available   

Susceptibility
0.00   
6
Not Available   

Electrical Properties
  
  

Electrical Property
Semiconductor   
Conductor   

Resistivity
1.29 nΩ·m   
99+
1.15 nΩ·m   
99+

Electrical Conductivity
0.01 106/cm Ω   
99+
0.01 106/cm Ω   
99+

Electron Affinity
91.20 kJ/mol   
11
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
0.18 J/(kg K)   
33

Molar Heat Capacity
25.52 J/mol·K   
37
28.91 J/mol·K   
9

Thermal Conductivity
7.97 W/m·K   
99+
11.10 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
13.40 µm/(m·K)   
28
10.30 µm/(m·K)   
38

Enthalpy
  
  

Enthalpy of Vaporization
151.00 kJ/mol   
99+
330.90 kJ/mol   
26

Enthalpy of Fusion
10.90 kJ/mol   
33
10.80 kJ/mol   
34

Enthalpy of Atomization
207.10 kJ/mol   
99+
314.00 kJ/mol   
33

Standard Molar Entropy
56.70 J/mol.K   
24
73.20 J/mol.K   
10

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