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Indium vs Rhodium

Indium
Rhodium
Rhodium vs Indium


Periodic Table
Symbol
In  
Rh  
Group Number
13  
5
9  
9
Period Number
5  
5  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7440746  
17
7440166  
99+
Space Group Name
I4/mmm  
Fm_ 3m  
Space Group Number
139.00  
11
225.00  
3
Facts
Interesting Facts
  • Luster of Indium is bright in nature.
  • Reich and richer were looking for thallium in zinc metal and they discovered Indium metal.
  
  • 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
Mining, Ores of metals  
Earth's crust, Found As a By-product, Found in Minerals, Mining  
History
  
  
Who Discovered
Ferdinand Reich and Hieronymous Theodor Richter  
William Hyde Wollaston  
Discovery
In 1863  
In 1804  
Abundance
  
  
Abundance In Universe
0.00 %  
29
0.00 %  
27
Abundance In Sun
0.00 %  
23
0.00 %  
25
Abundance In Meteorites
0.00 %  
99+
0.00 %  
36
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
0.00 %  
99+
-  
Abundance In Humans
0.00 %  
16
0.00 %  
24
Uses
Uses & Benefits
  • It is used to produce indium tin oxide (ITO), it is used in manufacturing touch screens, flat screen TVs and solar panels.
  • Its nitride, phosphide and antimonide are used in transistors and microchips.
  
  • 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
Aerospace Industry, Automobile Industry  
Aerospace Industry, Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
Medical Research  
-  
Other Uses
Alloys, In Nuclear Reactors  
Alloys  
Biological Properties
  
  
Toxicity
Non Toxic  
-  
Present in Human Body
Yes  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
156.61 °C  
99+
1,966.00 °C  
12
Boiling Point
2,000.00 °C  
99+
3,727.00 °C  
17
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silvery White  
Luster
Lustrous  
Metallic  
Hardness
  
  
Mohs Hardness
1.20  
21
6.00  
6
Brinell Hardness
8.80 MPa  
99+
980.00 MPa  
10
Vickers Hardness
0.01 MPa  
99+
1,100.00 MPa  
15
Speed of Sound
1,215.00 m/s  
99+
4,700.00 m/s  
19
Optical Properties
  
  
Refractive Index
3.41  
1
2.40  
7
Reflectivity
83.00 %  
6
84.00 %  
5
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
In  
Rh  
Isotopes
  
  
Known Isotopes
35  
4
16  
23
Electronegativity
  
  
Pauling Electronegativity
1.78  
17
2.28  
4
Sanderson Electronegativity
2.14  
9
2.28  
5
Allred Rochow Electronegativity
1.49  
14
1.45  
17
Mulliken-Jaffe Electronegativity
1.76  
18
2.28  
4
Allen Electronegativity
1.66  
21
1.56  
27
Electropositivity
  
  
Pauling Electropositivity
2.22  
38
1.72  
99+
Ionization Energies
  
  
1st Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
29
2nd Energy Level
1,820.70 kJ/mol  
19
1,740.00 kJ/mol  
27
3rd Energy Level
2,704.00 kJ/mol  
40
2,997.00 kJ/mol  
27
4th Energy Level
5,210.00 kJ/mol  
26
7,197.00 kJ/mol  
11
5th Energy Level
5,580.00 kJ/mol  
99+
7,197.00 kJ/mol  
26
6th Energy Level
5,580.00 kJ/mol  
99+
7,197.00 kJ/mol  
40
7th Energy level
5,580.00 kJ/mol  
99+
7,197.00 kJ/mol  
35
8th Energy Level
5,580.00 kJ/mol  
99+
3,480.00 kJ/mol  
99+
9th Energy Level
5,580.00 kJ/mol  
99+
5,090.00 kJ/mol  
99+
10th Energy Level
5,580.00 kJ/mol  
99+
7,197.00 kJ/mol  
33
11th Energy Level
5,580.00 kJ/mol  
99+
7,197.00 kJ/mol  
32
12th Energy Level
5,580.00 kJ/mol  
99+
7,190.00 kJ/mol  
99+
13th Energy Level
5,580.00 kJ/mol  
99+
7,190.00 kJ/mol  
27
14th Energy Level
558.30 kJ/mol  
99+
7,197.00 kJ/mol  
21
15th Energy Level
55,800.00 kJ/mol  
99+
71,900.00 kJ/mol  
23
16th Energy Level
558.30 kJ/mol  
99+
71,900.00 kJ/mol  
18
17th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
39
18th Energy Level
5,580.00 kJ/mol  
99+
7,197.00 kJ/mol  
29
19th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
36
20th Energy Level
558.00 kJ/mol  
99+
719.00 kJ/mol  
30
21st Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
99+
22nd Energy Level
558.00 kJ/mol  
99+
719.00 kJ/mol  
24
23rd Energy Level
5,581.00 kJ/mol  
24
719.70 kJ/mol  
99+
24th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
23
25th Energy Level
558.00 kJ/mol  
99+
719.00 kJ/mol  
23
26th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
23
27th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
22
28th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
28
29th Energy Level
558.30 kJ/mol  
99+
719.70 kJ/mol  
29
30th Energy Level
558.00 kJ/mol  
99+
719.00 kJ/mol  
23
Electrochemical Equivalent
1.43 g/amp-hr  
99+
1.28 g/amp-hr  
99+
Electron Work Function
4.12 eV  
31
4.98 eV  
10
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
49  
99+
45  
99+
Electron Configuration
[Kr] 4d10 5s2 5p1  
[Kr] 4d8 5s1  
Crystal Structure
Tetragonal (TETR)  
Face Centered Cubic (FCC)  
Crystal Lattice
TETR-Crystal-Structure-of-Indium.jpg#100  
FCC-Crystal-Structure-of-Rhodium.jpg#100  
Atom
  
  
Number of Protons
49  
99+
45  
99+
Number of Neutrons
66  
99+
58  
99+
Number of Electrons
49  
99+
45  
99+
Radius of an Atom
  
  
Atomic Radius
167.00 pm  
26
134.00 pm  
99+
Covalent Radius
142.00 pm  
99+
142.00 pm  
99+
Van der Waals Radius
193.00 pm  
38
200.00 pm  
35
Atomic Weight
114.82 amu  
99+
102.91 amu  
99+
Atomic Volume
15.70 cm3/mol  
99+
8.30 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cadmium
  
Ruthenium
  
Next Element
Tin
  
Palladium
  
Valence Electron Potential
54.00 (-eV)  
26
64.00 (-eV)  
22
Lattice Constant
325.23 pm  
99+
380.34 pm  
30
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.56  
99+
1.73  
7
Mechanical
Density
  
  
Density At Room Temperature
7.31 g/cm3  
99+
12.41 g/cm3  
30
Density When Liquid (at m.p.)
7.02 g/cm3  
99+
10.70 g/cm3  
35
Tensile Strength
2.50 MPa  
99+
951.00 MPa  
5
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.01 (Pa)  
11
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.02 (Pa)  
19
Elasticity properties
  
  
Shear Modulus
18.00 GPa  
99+
150.00 GPa  
6
Bulk Modulus
46.90 GPa  
27
275.00 GPa  
5
Young's Modulus
11.00 GPa  
99+
380.00 GPa  
5
Poisson Ratio
0.44  
3
0.26  
22
Other Mechanical Properties
Ductile, Malleable  
Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
7.31  
99+
12.41  
32
Magnetic Ordering
Diamagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
34
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
83.70 nΩ·m  
34
43.30 nΩ·m  
99+
Electrical Conductivity
0.12 106/cm Ω  
20
0.21 106/cm Ω  
8
Electron Affinity
28.90 kJ/mol  
37
109.70 kJ/mol  
8
Thermal
Specific Heat
0.23 J/(kg K)  
27
0.24 J/(kg K)  
22
Molar Heat Capacity
26.74 J/mol·K  
32
24.98 J/mol·K  
99+
Thermal Conductivity
81.80 W/m·K  
21
150.00 W/m·K  
9
Critical Temperature
429.75 K  
99+
2,237.00 K  
13
Thermal Expansion
32.10 µm/(m·K)  
9
8.20 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
226.40 kJ/mol  
99+
495.40 kJ/mol  
16
Enthalpy of Fusion
3.28 kJ/mol  
99+
21.76 kJ/mol  
10
Enthalpy of Atomization
242.70 kJ/mol  
99+
556.50 kJ/mol  
16
Standard Molar Entropy
57.80 J/mol.K  
27
31.50 J/mol.K  
99+
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