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Ytterbium Rhodium Comparison


Rhodium Ytterbium comparison


Periodic Table

Symbol
Yb   
Rh   

Group Number
Not Available   
9   
9

Period Number
6   
5   

Block
f block   
d block   

Element Family
Lanthanide   
Transition Metal   

CAS Number
7440644   
26
7440166   
99+

Space Group Name
Fm_ 3m   
Fm_ 3m   

Space Group Number
225.00   
2
225.00   
2

Facts

Interesting Facts
  • Ytterbium metal oxidizes rapidly if exposed to air.
  • Ytterbium metal can dissolve quickly in Mineral acid.
  
  • Rhodium is the rarest element out of all non-radioactive metals on the earth .
  • Rhodium is one of the most durable and hard metal, which also have high reflectance.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Found As a By-product, Found in Minerals, Mining   

History
  
  

Who Discovered
Jean Charles Galissard de Marignac   
William Hyde Wollaston   

Discovery
In 1878   
In 1804   

Abundance
  
  

Abundance In Universe
2 * 10-7 %   
22
6 * 10-8 %   
26

Abundance In Sun
~0.0000001 %   
26
~0.0000002 %   
25

Abundance In Meteorites
0.00 %   
36
0.00 %   
36

Abundance In Earth's Crust
0.00 %   
33
0.00 %   
99+

Abundance In Oceans
0.00 %   
37
Not Available   

Uses

Uses & Benefits
  • Ytterbium metal is used in memory devices and tuneable laser.
  • It is also used as industrial catalyst as the other catalysts are too toxic and polluting.
  
  • Rhodium metal is mainly used in catalytic converters for cars as it reduces nitrogen oxides in exhaust gases.
  • It is used as an industrial catalyst for nitric acid, acetic acid, hydrogenation reaction, etc.
  

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

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys   

Biological Properties
  
  

Toxicity
Highly Toxic   
NA   

Present in Human Body
No   
No   

Physical Properties

Melting Point
824.00 °C   
99+
1,966.00 °C   
12

Boiling Point
1,196.00 °C   
99+
3,727.00 °C   
17

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery White   

Luster
Metallic   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
6.00   
6

Brinell Hardness
343.00 MPa   
31
980.00 MPa   
9

Vickers Hardness
206.00 MPa   
33
1,100.00 MPa   
9

Speed of Sound
1,590.00 m/s   
99+
4,700.00 m/s   
15

Optical Properties
  
  

Reflectivity
Not Available   
84.00 %   
4

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
Yb   
Rh   

Isotopes
  
  

Known Isotopes
30   
9
16   
23

Electronegativity
  
  

Pauling Electronegativity
Not Available   
2.28   
3

Allred Rochow Electronegativity
1.06   
33
1.45   
16

Allen Electronegativity
Not Available   
1.56   
24

Electropositivity
  
  

Pauling Electropositivity
Not Available   
1.72   
99+

Ionization Energies
  
  

1st Energy Level
603.40 kJ/mol   
99+
719.70 kJ/mol   
29

2nd Energy Level
1,174.80 kJ/mol   
99+
1,740.00 kJ/mol   
26

3rd Energy Level
2,417.00 kJ/mol   
99+
2,997.00 kJ/mol   
27

4th Energy Level
4,203.00 kJ/mol   
31
Not Available   

Electrochemical Equivalent
2.15 g/amp-hr   
25
1.28 g/amp-hr   
99+

Electron Work Function
Not Available   
4.98 eV   
6

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

Atomic Properties

Atomic Number
70   
99+
45   
99+

Electron Configuration
[Xe] 4f14 6s2   
[Kr] 4d8 5s1   

Crystal Structure
Face Centered Cubic (FCC)   
Face Centered Cubic (FCC)   

Crystal Lattice
FCC-Crystal-Structure-of-Ytterbium.jpg#100   
FCC-Crystal-Structure-of-Rhodium.jpg#100   

Atom
  
  

Number of Protons
70   
99+
45   
99+

Number of Neutrons
103   
31
58   
99+

Number of Electrons
70   
99+
45   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
134.00 pm   
99+

Covalent Radius
187.00 pm   
20
142.00 pm   
99+

Van der Waals Radius
242.00 pm   
12
200.00 pm   
28

Atomic Weight
173.05 amu   
99+
102.91 amu   
99+

Atomic Volume
24.79 cm3/mol   
9
8.30 cm3/mol   
99+

Adjacent Atomic Numbers
  
  

Previous Element
Thulium
  
Ruthenium
  

Next Element
Lutetium
  
Palladium
  

Valence Electron Potential
50.30 (-eV)   
27
64.00 (-eV)   
22

Lattice Constant
548.47 pm   
11
380.34 pm   
27

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

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
6.90 g/cm3   
99+
12.41 g/cm3   
28

Density When Liquid (at m.p.)
6.21 g/cm3   
99+
10.70 g/cm3   
14

Tensile Strength
58.00 MPa   
18
951.00 MPa   
5

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 2000 K
Not Available   
0.02 (Pa)   
19

Elasticity properties
  
  

Shear Modulus
9.90 GPa   
99+
150.00 GPa   
6

Bulk Modulus
30.50 GPa   
39
275.00 GPa   
5

Young's Modulus
23.90 GPa   
99+
380.00 GPa   
5

Poisson Ratio
0.21   
33
0.26   
22

Other Mechanical Properties
Ductile, Malleable   
Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
6.97   
99+
12.41   
20

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
0.25 nΩ·m   
99+
43.30 nΩ·m   
99+

Electrical Conductivity
0.04 106/cm Ω   
38
0.21 106/cm Ω   
8

Electron Affinity
50.00 kJ/mol   
21
109.70 kJ/mol   
7

Thermal Properties

Specific Heat
0.15 J/(kg K)   
36
0.24 J/(kg K)   
22

Molar Heat Capacity
26.74 J/mol·K   
25
24.98 J/mol·K   
99+

Thermal Conductivity
38.50 W/m·K   
35
150.00 W/m·K   
9

Critical Temperature
26.30 K   
7
Not Available   

Thermal Expansion
26.30 µm/(m·K)   
14
8.20 µm/(m·K)   
99+

Enthalpy
  
  

Enthalpy of Vaporization
128.90 kJ/mol   
99+
495.40 kJ/mol   
12

Enthalpy of Fusion
7.66 kJ/mol   
99+
21.76 kJ/mol   
10

Enthalpy of Atomization
180.00 kJ/mol   
99+
556.50 kJ/mol   
12

Standard Molar Entropy
59.90 J/mol.K   
21
31.50 J/mol.K   
99+

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