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Rhodium vs Uranium

Rhodium
Uranium
Uranium vs Rhodium


Periodic Table
Symbol
Rh  
U  
Group Number
9  
9
0  
18
Period Number
5  
7  
Block
d block  
f block  
Element Family
Transition Metal  
Actinide  
CAS Number
7440166  
99+
7440611  
28
Space Group Name
Fm_ 3m  
Cmcm  
Space Group Number
225.00  
3
63.00  
13
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.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining  
Earth's crust, Mining, Ores of Minerals  
History
  
  
Who Discovered
William Hyde Wollaston  
-  
Discovery
In 1804  
In 1789  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
30
Abundance In Sun
0.00 %  
25
0.00 %  
26
Abundance In Meteorites
0.00 %  
36
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
36
Abundance In Oceans
-  
0.00 %  
11
Abundance In Humans
0.00 %  
24
0.00 %  
24
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.
  
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Ammunition Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
1.20 p.p.m.  
19
Physical
Melting Point
1,966.00 °C  
12
1,132.00 °C  
39
Boiling Point
3,727.00 °C  
17
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Silvery Gray  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
6.00  
6
Brinell Hardness
980.00 MPa  
10
2,350.00 MPa  
2
Vickers Hardness
1,100.00 MPa  
15
1,960.00 MPa  
6
Speed of Sound
4,700.00 m/s  
19
3,155.00 m/s  
36
Optical Properties
  
  
Refractive Index
2.40  
7
1.38  
40
Reflectivity
84.00 %  
5
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rh  
U  
Isotopes
  
  
Known Isotopes
16  
23
25  
14
Electronegativity
  
  
Pauling Electronegativity
2.28  
4
1.38  
29
Sanderson Electronegativity
2.28  
5
1.38  
22
Allred Rochow Electronegativity
1.45  
17
1.22  
27
Mulliken-Jaffe Electronegativity
2.28  
4
1.38  
29
Allen Electronegativity
1.56  
27
1.38  
36
Electropositivity
  
  
Pauling Electropositivity
1.72  
99+
2.62  
26
Ionization Energies
  
  
1st Energy Level
719.70 kJ/mol  
29
597.60 kJ/mol  
99+
2nd Energy Level
1,740.00 kJ/mol  
27
1,420.00 kJ/mol  
99+
3rd Energy Level
2,997.00 kJ/mol  
27
1,900.00 kJ/mol  
99+
4th Energy Level
7,197.00 kJ/mol  
11
3,145.00 kJ/mol  
99+
5th Energy Level
7,197.00 kJ/mol  
26
5,976.00 kJ/mol  
99+
6th Energy Level
7,197.00 kJ/mol  
40
5,976.00 kJ/mol  
99+
7th Energy level
7,197.00 kJ/mol  
35
5,970.00 kJ/mol  
99+
8th Energy Level
3,480.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
9th Energy Level
5,090.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
10th Energy Level
7,197.00 kJ/mol  
33
5,976.00 kJ/mol  
99+
11th Energy Level
7,197.00 kJ/mol  
32
5,976.00 kJ/mol  
99+
12th Energy Level
7,190.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
13th Energy Level
7,190.00 kJ/mol  
27
5,970.00 kJ/mol  
99+
14th Energy Level
7,197.00 kJ/mol  
21
5,970.00 kJ/mol  
34
15th Energy Level
71,900.00 kJ/mol  
23
59,700.00 kJ/mol  
99+
16th Energy Level
71,900.00 kJ/mol  
18
59,700.00 kJ/mol  
35
17th Energy Level
719.70 kJ/mol  
39
597.60 kJ/mol  
99+
18th Energy Level
7,197.00 kJ/mol  
29
5,976.00 kJ/mol  
99+
19th Energy Level
719.70 kJ/mol  
36
597.60 kJ/mol  
99+
20th Energy Level
719.00 kJ/mol  
30
597.00 kJ/mol  
99+
21st Energy Level
719.70 kJ/mol  
99+
597.60 kJ/mol  
99+
22nd Energy Level
719.00 kJ/mol  
24
597.00 kJ/mol  
99+
23rd Energy Level
719.70 kJ/mol  
99+
597.60 kJ/mol  
99+
24th Energy Level
719.70 kJ/mol  
23
597.60 kJ/mol  
99+
25th Energy Level
719.00 kJ/mol  
23
597.60 kJ/mol  
99+
26th Energy Level
719.70 kJ/mol  
23
597.60 kJ/mol  
99+
27th Energy Level
719.70 kJ/mol  
22
597.60 kJ/mol  
99+
28th Energy Level
719.70 kJ/mol  
28
597.60 kJ/mol  
99+
29th Energy Level
719.70 kJ/mol  
29
597.60 kJ/mol  
99+
30th Energy Level
719.00 kJ/mol  
23
597.60 kJ/mol  
99+
Electrochemical Equivalent
1.28 g/amp-hr  
99+
1.48 g/amp-hr  
99+
Electron Work Function
4.98 eV  
10
3.63 eV  
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
45  
99+
92  
26
Electron Configuration
[Kr] 4d8 5s1  
[Rn] 5f3 6d1 7s2  
Crystal Structure
Face Centered Cubic (FCC)  
Orthorhombic (ORTH)  
Crystal Lattice
FCC-Crystal-Structure-of-Rhodium.jpg#100  
ORTH-Crystal-Structure-of-Uranium.jpg#100  
Atom
  
  
Number of Protons
45  
99+
92  
26
Number of Neutrons
58  
99+
146  
14
Number of Electrons
45  
99+
92  
26
Radius of an Atom
  
  
Atomic Radius
134.00 pm  
99+
156.00 pm  
31
Covalent Radius
142.00 pm  
99+
196.00 pm  
14
Van der Waals Radius
200.00 pm  
35
186.00 pm  
40
Atomic Weight
102.91 amu  
99+
238.03 amu  
21
Atomic Volume
8.30 cm3/mol  
99+
12.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Ruthenium
  
Protactinium
  
Next Element
Palladium
  
Neptunium
  
Valence Electron Potential
64.00 (-eV)  
22
170.00 (-eV)  
4
Lattice Constant
380.34 pm  
30
295.08 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.73  
7
1.02  
99+
Mechanical
Density
  
  
Density At Room Temperature
12.41 g/cm3  
30
19.10 g/cm3  
17
Density When Liquid (at m.p.)
10.70 g/cm3  
35
17.30 g/cm3  
17
Tensile Strength
951.00 MPa  
5
100.00 MPa  
28
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.02 (Pa)  
19
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
150.00 GPa  
6
111.00 GPa  
10
Bulk Modulus
275.00 GPa  
5
100.00 GPa  
16
Young's Modulus
380.00 GPa  
5
208.00 GPa  
11
Poisson Ratio
0.26  
22
0.23  
30
Other Mechanical Properties
Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
12.41  
32
18.80  
19
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Poor Conductor  
Resistivity
43.30 nΩ·m  
99+
0.28 nΩ·m  
99+
Electrical Conductivity
0.21 106/cm Ω  
8
0.04 106/cm Ω  
99+
Electron Affinity
109.70 kJ/mol  
8
50.60 kJ/mol  
25
Thermal
Specific Heat
0.24 J/(kg K)  
22
0.12 J/(kg K)  
99+
Molar Heat Capacity
24.98 J/mol·K  
99+
27.67 J/mol·K  
18
Thermal Conductivity
150.00 W/m·K  
9
27.50 W/m·K  
99+
Critical Temperature
2,237.00 K  
13
1,405.00 K  
99+
Thermal Expansion
8.20 µm/(m·K)  
99+
13.90 µm/(m·K)  
30
Enthalpy
  
  
Enthalpy of Vaporization
495.40 kJ/mol  
16
477.00 kJ/mol  
18
Enthalpy of Fusion
21.76 kJ/mol  
10
15.48 kJ/mol  
19
Enthalpy of Atomization
556.50 kJ/mol  
16
489.50 kJ/mol  
18
Standard Molar Entropy
31.50 J/mol.K  
99+
50.20 J/mol.K  
99+
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