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Rhodium vs Hassium


Hassium vs Rhodium


Periodic Table

Symbol
Rh   
Hs   

Group Number
9   
9
8   
10

Period Number
5   
7   

Block
d block   
d block   

Element Family
Transition Metal   
Transition Metal   

CAS Number
7440166   
99+
54037579   
11

Space Group Name
Fm_ 3m   
Not Available   

Space Group Number
225.00   
2
Not Available   

Facts

Interesting Facts
  • 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.
  
  • Hassium metals rate of decay is very high.
  • Hassium metals 1st sample was synthesized through a nuclear reaction.
  

Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining   
Synthetically Produced   

History
  
  

Who Discovered
William Hyde Wollaston   
Gesellschaft für Schwerionenforschung   

Discovery
In 1804   
In 1984   

Abundance
  
  

Abundance In Universe
6 * 10-8 %   
26
Not Available   

Abundance In Sun
~0.0000002 %   
25
~-9999 %   

Abundance In Meteorites
0.00 %   
36
Not Available   

Abundance In Earth's Crust
0.00 %   
99+
Not Available   

Uses

Uses & Benefits
  • 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.
  
  • Currently known uses of Hassium metal are limited to research purpose only.
  

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

Medical Uses
NA   
NA   

Other Uses
Alloys   
Research Purposes   

Biological Properties
  
  

Toxicity
NA   
Unknown   

Present in Human Body
No   
No   

In Blood
Not Available   
0.00 Blood/mg dm-3   
37

In Bone
Not Available   
0.00 p.p.m.   
36

Physical Properties

Melting Point
1,966.00 °C   
12
Not Available   

Boiling Point
3,727.00 °C   
17
Not Available   

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silver   

Luster
Metallic   
NA   

Hardness
  
  

Mohs Hardness
6.00   
6
Not Available   

Brinell Hardness
980.00 MPa   
9
Not Available   

Vickers Hardness
1,100.00 MPa   
9
Not Available   

Speed of Sound
4,700.00 m/s   
15
Not Available   

Optical Properties
  
  

Reflectivity
84.00 %   
4
Not Available   

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
Rh   
Hs   

Isotopes
  
  

Known Isotopes
16   
23
7   
31

Electronegativity
  
  

Pauling Electronegativity
2.28   
3
Not Available   

Allred Rochow Electronegativity
1.45   
16
Not Available   

Allen Electronegativity
1.56   
24
Not Available   

Electropositivity
  
  

Pauling Electropositivity
1.72   
99+
Not Available   

Ionization Energies
  
  

1st Energy Level
719.70 kJ/mol   
29
733.30 kJ/mol   
26

2nd Energy Level
1,740.00 kJ/mol   
26
1,756.00 kJ/mol   
24

3rd Energy Level
2,997.00 kJ/mol   
27
2,827.00 kJ/mol   
36

4th Energy Level
Not Available   
3,637.50 kJ/mol   
99+

5th Energy Level
Not Available   
4,940.00 kJ/mol   
34

6th Energy Level
Not Available   
6,175.10 kJ/mol   
23

7th Energy level
Not Available   
7,535.50 kJ/mol   
21

8th Energy Level
Not Available   
8,857.40 kJ/mol   
20

Electrochemical Equivalent
1.28 g/amp-hr   
99+
Not Available   

Electron Work Function
4.98 eV   
6
Not Available   

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

Atomic Properties

Atomic Number
45   
99+
108   
10

Electron Configuration
[Kr] 4d8 5s1   
[Rn] 5f14 6d6 7s2   

Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   

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

Atom
  
  

Number of Protons
45   
99+
108   
10

Number of Neutrons
58   
99+
158   
6

Number of Electrons
45   
99+
108   
10

Radius of an Atom
  
  

Atomic Radius
134.00 pm   
99+
126.00 pm   
99+

Covalent Radius
142.00 pm   
99+
134.00 pm   
99+

Van der Waals Radius
200.00 pm   
28
Not Available   

Atomic Weight
102.91 amu   
99+
269.00 amu   
9

Atomic Volume
8.30 cm3/mol   
99+
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Ruthenium
  
Bohrium
  

Next Element
Palladium
  
Meitnerium
  

Valence Electron Potential
64.00 (-eV)   
22
Not Available   

Lattice Constant
380.34 pm   
27
Not Available   

Lattice Angles
π/2, π/2, π/2   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
12.41 g/cm3   
28
40.70 g/cm3   
1

Density When Liquid (at m.p.)
10.70 g/cm3   
14
Not Available   

Tensile Strength
951.00 MPa   
5
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

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

Elasticity properties
  
  

Shear Modulus
150.00 GPa   
6
Not Available   

Bulk Modulus
275.00 GPa   
5
Not Available   

Young's Modulus
380.00 GPa   
5
Not Available   

Poisson Ratio
0.26   
22
Not Available   

Other Mechanical Properties
Malleable   
Unknown   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
12.41   
20
Not Available   

Magnetic Ordering
Paramagnetic   
Unknown   

Electrical Properties
  
  

Electrical Property
Conductor   
Unknown   

Resistivity
43.30 nΩ·m   
99+
Not Available   

Electrical Conductivity
0.21 106/cm Ω   
8
Not Available   

Electron Affinity
109.70 kJ/mol   
7
Not Available   

Thermal Properties

Specific Heat
0.24 J/(kg K)   
22
Not Available   

Molar Heat Capacity
24.98 J/mol·K   
99+
Not Available   

Thermal Conductivity
150.00 W/m·K   
9
Not Available   

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
8.20 µm/(m·K)   
99+
Not Available   

Enthalpy
  
  

Enthalpy of Vaporization
495.40 kJ/mol   
12
Not Available   

Enthalpy of Fusion
21.76 kJ/mol   
10
Not Available   

Enthalpy of Atomization
556.50 kJ/mol   
12
Not Available   

Standard Molar Entropy
31.50 J/mol.K   
99+
Not Available   

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