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Gadolinium vs Gadolinium


Gadolinium vs Gadolinium


Periodic Table

Symbol
Gd   
Gd   

Group Number
0   
18
0   
18

Period Number
6   
6   

Block
f block   
f block   

Element Family
Lanthanide   
Lanthanide   

CAS Number
7440542   
33
7440542   
33

Space Group Name
P63/mmc   
P63/mmc   

Space Group Number
194.00   
5
194.00   
5

Facts

Interesting Facts
  • Gadolinium is not found free in nature, hence it is not a native metal.
  • Gadolinium metal found in minerals like Monazite and Bastnaesite.
  
  • Gadolinium is not found free in nature, hence it is not a native metal.
  • Gadolinium metal found in minerals like Monazite and Bastnaesite.
  

Sources
Found in Minerals, Mining   
Found in Minerals, Mining   

History
  
  

Who Discovered
Jean Charles Galissard de Marignac   
Jean Charles Galissard de Marignac   

Discovery
In 1880   
In 1880   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
2 * 10-7 %   
22

Abundance In Sun
~0.0000002 %   
25
~0.0000002 %   
25

Abundance In Meteorites
0.00 %   
34
0.00 %   
34

Abundance In Earth's Crust
0.00 %   
30
0.00 %   
30

Abundance In Oceans
0.00 %   
38
0.00 %   
38

Uses

Uses & Benefits
  • Its alloys are also used in making Magnets, electronic components and Data storage devices.
  • Compound of Gadolinium metal are used in magnetic resonance imaging (MRI).
  
  • Its alloys are also used in making Magnets, electronic components and Data storage devices.
  • Compound of Gadolinium metal are used in magnetic resonance imaging (MRI).
  

Industrial Uses
Aerospace Industry, Electrical Industry, Electronic Industry   
Aerospace Industry, Electrical Industry, Electronic Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Non Toxic   

Present in Human Body
No   
No   

Physical Properties

Melting Point
1,311.00 °C   
35
1,311.00 °C   
35

Boiling Point
3,233.00 °C   
25
3,233.00 °C   
25

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
Metallic   
Metallic   

Hardness
  
  

Vickers Hardness
510.00 MPa   
22
510.00 MPa   
22

Speed of Sound
2,680.00 m/s   
34
2,680.00 m/s   
34

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
Gd   
Gd   

Isotopes
  
  

Known Isotopes
26   
13
26   
13

Electronegativity
  
  

Pauling Electronegativity
1.20   
39
1.20   
39

Allred Rochow Electronegativity
1.11   
29
1.11   
29

Electropositivity
  
  

Pauling Electropositivity
2.80   
15
2.80   
15

Ionization Energies
  
  

1st Energy Level
593.40 kJ/mol   
99+
593.40 kJ/mol   
99+

2nd Energy Level
1,170.00 kJ/mol   
99+
1,170.00 kJ/mol   
99+

3rd Energy Level
1,990.00 kJ/mol   
99+
1,990.00 kJ/mol   
99+

4th Energy Level
4,250.00 kJ/mol   
30
4,250.00 kJ/mol   
30

Electrochemical Equivalent
1.96 g/amp-hr   
32
1.96 g/amp-hr   
32

Electron Work Function
3.10 eV   
35
3.10 eV   
35

Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes   
Corrosion, Flammable, Ionization, Radioactive Isotopes   

Atomic Properties

Atomic Number
64   
99+
64   
99+

Electron Configuration
[Xe] 4f7 5d1 6s2   
[Xe] 4f7 5d1 6s2   

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

Crystal Lattice
HCP-Crystal-Structure-of-Gadolinium.jpg#100   
HCP-Crystal-Structure-of-Gadolinium.jpg#100   

Atom
  
  

Number of Protons
64   
99+
64   
99+

Number of Neutrons
93   
37
93   
37

Number of Electrons
64   
99+
64   
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
180.00 pm   
14

Covalent Radius
196.00 pm   
14
196.00 pm   
14

Van der Waals Radius
237.00 pm   
15
237.00 pm   
15

Atomic Weight
47.87 amu   
99+
47.87 amu   
99+

Atomic Volume
19.90 cm3/mol   
20
19.90 cm3/mol   
20

Adjacent Atomic Numbers
  
  

Previous Element
Europium
  
Europium
  

Next Element
Terbium
  
Terbium
  

Valence Electron Potential
46.10 (-eV)   
34
46.10 (-eV)   
34

Lattice Constant
363.60 pm   
32
363.60 pm   
32

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

Lattice C/A Ratio
1.59   
9
1.59   
9

Mechanical Properties

Density
  
  

Density At Room Temperature
7.90 g/cm3   
99+
7.90 g/cm3   
99+

Density When Liquid (at m.p.)
7.40 g/cm3   
31
7.40 g/cm3   
31

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
30
0.00 (Pa)   
30

Vapor Pressure at 2000 K
7.39 (Pa)   
9
7.39 (Pa)   
9

Elasticity properties
  
  

Shear Modulus
21.80 GPa   
33
21.80 GPa   
33

Bulk Modulus
37.90 GPa   
34
37.90 GPa   
34

Young's Modulus
54.80 GPa   
35
54.80 GPa   
35

Poisson Ratio
0.26   
23
0.26   
23

Other Mechanical Properties
Ductile, Malleable   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
7.90   
40
7.90   
40

Magnetic Ordering
Ferromagnetic   
Ferromagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
1.31 nΩ·m   
99+
1.31 nΩ·m   
99+

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

Electron Affinity
50.00 kJ/mol   
21
50.00 kJ/mol   
21

Thermal Properties

Specific Heat
0.23 J/(kg K)   
27
0.23 J/(kg K)   
27

Molar Heat Capacity
37.03 J/mol·K   
2
37.03 J/mol·K   
2

Thermal Conductivity
10.60 W/m·K   
99+
10.60 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
9.40 µm/(m·K)   
99+
9.40 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
359.40 kJ/mol   
21
359.40 kJ/mol   
21

Enthalpy of Fusion
10.05 kJ/mol   
36
10.05 kJ/mol   
36

Enthalpy of Atomization
352.00 kJ/mol   
27
352.00 kJ/mol   
27

Standard Molar Entropy
68.10 J/mol.K   
16
68.10 J/mol.K   
16

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