Home
 Compare Metals

Rhodium vs Gold

Rhodium
Gold
Gold vs Rhodium


Periodic Table
Symbol
Rh  
Au  
Group Number
9  
9
11  
7
Period Number
5  
6  
Block
d block  
d block  
Element Family
Transition Metal  
Transition Metal  
CAS Number
7440166  
99+
7440575  
31
Space Group Name
Fm_ 3m  
Fm_ 3m  
Space Group Number
225.00  
3
225.00  
3
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.
  
  • It is found in copper ores and from the crust of the earth.
  • It is the most malleable and ductile metal.
  • Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
  
Sources
Earth's crust, Found As a By-product, Found in Minerals, Mining  
Earth's crust, Mining, Ores of metals  
History
  
  
Who Discovered
William Hyde Wollaston  
-  
Discovery
In 1804  
Before 6000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
27
0.00 %  
27
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 %  
99+
Abundance In Oceans
-  
0.00 %  
21
Abundance In Humans
0.00 %  
24
0.00 %  
21
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.
  
  • Gold metal is mainly used for Jewelry, bullion, coinage, etc.
  • It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
  
Industrial Uses
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry  
Other Uses
Alloys  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
-  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
38
In Bone
0.00 p.p.m.  
99+
0.02 p.p.m.  
35
Physical
Melting Point
1,966.00 °C  
12
1,064.43 °C  
99+
Boiling Point
3,727.00 °C  
17
2,807.00 °C  
37
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Gold  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
2.50  
15
Brinell Hardness
980.00 MPa  
10
194.00 MPa  
99+
Vickers Hardness
1,100.00 MPa  
15
216.00 MPa  
99+
Speed of Sound
4,700.00 m/s  
19
2,030.00 m/s  
99+
Optical Properties
  
  
Refractive Index
2.40  
7
0.47  
99+
Reflectivity
84.00 %  
5
95.00 %  
2
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rh  
Au  
Isotopes
  
  
Known Isotopes
16  
23
36  
3
Electronegativity
  
  
Pauling Electronegativity
2.28  
4
2.54  
2
Sanderson Electronegativity
2.28  
5
1.50  
18
Allred Rochow Electronegativity
1.45  
17
1.42  
19
Mulliken-Jaffe Electronegativity
2.28  
4
1.87  
15
Allen Electronegativity
1.56  
27
1.92  
7
Electropositivity
  
  
Pauling Electropositivity
1.72  
99+
1.46  
99+
Ionization Energies
  
  
1st Energy Level
719.70 kJ/mol  
29
890.10 kJ/mol  
8
2nd Energy Level
1,740.00 kJ/mol  
27
1,980.00 kJ/mol  
12
3rd Energy Level
2,997.00 kJ/mol  
27
2,856.00 kJ/mol  
33
4th Energy Level
7,197.00 kJ/mol  
11
890.10 kJ/mol  
99+
5th Energy Level
7,197.00 kJ/mol  
26
8,901.00 kJ/mol  
6
6th Energy Level
7,197.00 kJ/mol  
40
8,901.00 kJ/mol  
24
7th Energy level
7,197.00 kJ/mol  
35
8,901.00 kJ/mol  
21
8th Energy Level
3,480.00 kJ/mol  
99+
8,900.00 kJ/mol  
20
9th Energy Level
5,090.00 kJ/mol  
99+
8,901.00 kJ/mol  
20
10th Energy Level
7,197.00 kJ/mol  
33
8,901.00 kJ/mol  
21
11th Energy Level
7,197.00 kJ/mol  
32
8,901.00 kJ/mol  
19
12th Energy Level
7,190.00 kJ/mol  
99+
8,900.00 kJ/mol  
39
13th Energy Level
7,190.00 kJ/mol  
27
8,900.00 kJ/mol  
14
14th Energy Level
7,197.00 kJ/mol  
21
890.10 kJ/mol  
99+
15th Energy Level
71,900.00 kJ/mol  
23
89,000.00 kJ/mol  
7
16th Energy Level
71,900.00 kJ/mol  
18
890.10 kJ/mol  
99+
17th Energy Level
719.70 kJ/mol  
39
890.10 kJ/mol  
25
18th Energy Level
7,197.00 kJ/mol  
29
8,901.00 kJ/mol  
14
19th Energy Level
719.70 kJ/mol  
36
890.10 kJ/mol  
23
20th Energy Level
719.00 kJ/mol  
30
890.00 kJ/mol  
13
21st Energy Level
719.70 kJ/mol  
99+
890.10 kJ/mol  
35
22nd Energy Level
719.00 kJ/mol  
24
890.00 kJ/mol  
11
23rd Energy Level
719.70 kJ/mol  
99+
890.10 kJ/mol  
38
24th Energy Level
719.70 kJ/mol  
23
890.10 kJ/mol  
6
25th Energy Level
719.00 kJ/mol  
23
890.00 kJ/mol  
5
26th Energy Level
719.70 kJ/mol  
23
890.10 kJ/mol  
5
27th Energy Level
719.70 kJ/mol  
22
890.10 kJ/mol  
4
28th Energy Level
719.70 kJ/mol  
28
890.10 kJ/mol  
7
29th Energy Level
719.70 kJ/mol  
29
890.10 kJ/mol  
8
30th Energy Level
719.00 kJ/mol  
23
890.10 kJ/mol  
5
Electrochemical Equivalent
1.28 g/amp-hr  
99+
2.45 g/amp-hr  
25
Electron Work Function
4.98 eV  
10
5.10 eV  
8
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
45  
99+
79  
37
Electron Configuration
[Kr] 4d8 5s1  
[Xe] 4f14 5d10 6s1  
Crystal Structure
Face Centered Cubic (FCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Rhodium.jpg#100  
FCC-Crystal-Structure-of-Gold.jpg#100  
Atom
  
  
Number of Protons
45  
99+
79  
37
Number of Neutrons
58  
99+
118  
24
Number of Electrons
45  
99+
79  
37
Radius of an Atom
  
  
Atomic Radius
134.00 pm  
99+
151.00 pm  
34
Covalent Radius
142.00 pm  
99+
144.00 pm  
99+
Van der Waals Radius
200.00 pm  
35
166.00 pm  
99+
Atomic Weight
102.91 amu  
99+
196.97 amu  
33
Atomic Volume
8.30 cm3/mol  
99+
10.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Ruthenium
  
Platinum
  
Next Element
Palladium
  
Mercury
  
Valence Electron Potential
64.00 (-eV)  
22
43.40 (-eV)  
99+
Lattice Constant
380.34 pm  
30
407.82 pm  
24
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.73  
7
1.61  
18
Mechanical
Density
  
  
Density At Room Temperature
12.41 g/cm3  
30
19.30 g/cm3  
15
Density When Liquid (at m.p.)
10.70 g/cm3  
35
17.31 g/cm3  
16
Tensile Strength
951.00 MPa  
5
120.00 MPa  
27
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
25
Vapor Pressure at 2000 K
0.02 (Pa)  
19
67.00 (Pa)  
4
Elasticity properties
  
  
Shear Modulus
150.00 GPa  
6
27.00 GPa  
34
Bulk Modulus
275.00 GPa  
5
180.00 GPa  
9
Young's Modulus
380.00 GPa  
5
79.00 GPa  
26
Poisson Ratio
0.26  
22
0.40  
4
Other Mechanical Properties
Malleable  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
12.41  
32
19.32  
17
Magnetic Ordering
Paramagnetic  
Diamagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
10
Susceptibility
0.00  
24
0.00  
22
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
43.30 nΩ·m  
99+
2.20 nΩ·m  
99+
Electrical Conductivity
0.21 106/cm Ω  
8
0.45 106/cm Ω  
3
Electron Affinity
109.70 kJ/mol  
8
222.80 kJ/mol  
1
Thermal
Specific Heat
0.24 J/(kg K)  
22
0.13 J/(kg K)  
40
Molar Heat Capacity
24.98 J/mol·K  
99+
25.42 J/mol·K  
99+
Thermal Conductivity
150.00 W/m·K  
9
318.00 W/m·K  
3
Critical Temperature
2,237.00 K  
13
1,337.00 K  
99+
Thermal Expansion
8.20 µm/(m·K)  
99+
14.20 µm/(m·K)  
29
Enthalpy
  
  
Enthalpy of Vaporization
495.40 kJ/mol  
16
324.40 kJ/mol  
99+
Enthalpy of Fusion
21.76 kJ/mol  
10
12.55 kJ/mol  
33
Enthalpy of Atomization
556.50 kJ/mol  
16
364.00 kJ/mol  
34
Standard Molar Entropy
31.50 J/mol.K  
99+
47.40 J/mol.K  
99+
Periodic Table >>
<< All

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

» More Compare Transition Metals
Home | About | Contact | Disclaimer | Terms of use
© A softusvista inc. venture!