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Indium vs Chromium

Indium
Chromium
Chromium vs Indium


Periodic Table
Symbol
In  
Cr  
Group Number
13  
5
6  
12
Period Number
5  
4  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7440746  
17
7440473  
39
Space Group Name
I4/mmm  
Im_ 3m  
Space Group Number
139.00  
11
229.00  
2
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.
  
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  
Sources
Mining, Ores of metals  
Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Ferdinand Reich and Hieronymous Theodor Richter  
Louis Nicolas Vauquelin  
Discovery
In 1863  
In Between 1797 - 1798  
Abundance
  
  
Abundance In Universe
0.00 %  
29
0.00 %  
8
Abundance In Sun
0.00 %  
23
0.00 %  
7
Abundance In Meteorites
0.00 %  
99+
0.30 %  
7
Abundance In Earth's Crust
0.00 %  
99+
0.01 %  
13
Abundance In Oceans
0.00 %  
99+
0.00 %  
16
Abundance In Humans
0.00 %  
16
0.00 %  
19
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.
  
  • It is used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  
Industrial Uses
Aerospace Industry, Automobile Industry  
Automobile Industry, Chemical Industry  
Medical Uses
Medical Research  
-  
Other Uses
Alloys, In Nuclear Reactors  
Alloys  
Biological Properties
  
  
Toxicity
Non Toxic  
Highly Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.11 Blood/mg dm-3  
12
In Bone
0.00 p.p.m.  
99+
0.33 p.p.m.  
25
Physical
Melting Point
156.61 °C  
99+
1,857.00 °C  
14
Boiling Point
2,000.00 °C  
99+
2,672.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silver  
Luster
Lustrous  
Metallic  
Hardness
  
  
Mohs Hardness
1.20  
21
8.50  
1
Brinell Hardness
8.80 MPa  
99+
687.00 MPa  
18
Vickers Hardness
0.01 MPa  
99+
1,060.00 MPa  
17
Speed of Sound
1,215.00 m/s  
99+
5,940.00 m/s  
8
Optical Properties
  
  
Refractive Index
3.41  
1
2.97  
2
Reflectivity
83.00 %  
6
70.00 %  
13
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
In  
Cr  
Isotopes
  
  
Known Isotopes
35  
4
21  
18
Electronegativity
  
  
Pauling Electronegativity
1.78  
17
1.66  
19
Sanderson Electronegativity
2.14  
9
1.66  
17
Allred Rochow Electronegativity
1.49  
14
1.56  
11
Mulliken-Jaffe Electronegativity
1.76  
18
1.66  
19
Allen Electronegativity
1.66  
21
1.65  
22
Electropositivity
  
  
Pauling Electropositivity
2.22  
38
2.34  
36
Ionization Energies
  
  
1st Energy Level
558.30 kJ/mol  
99+
26,130.00 kJ/mol  
1
2nd Energy Level
1,820.70 kJ/mol  
19
28,750.00 kJ/mol  
1
3rd Energy Level
2,704.00 kJ/mol  
40
34,230.00 kJ/mol  
1
4th Energy Level
5,210.00 kJ/mol  
26
37,066.00 kJ/mol  
1
5th Energy Level
5,580.00 kJ/mol  
99+
97,510.00 kJ/mol  
1
6th Energy Level
5,580.00 kJ/mol  
99+
105,800.00 kJ/mol  
1
7th Energy level
5,580.00 kJ/mol  
99+
114,300.00 kJ/mol  
1
8th Energy Level
5,580.00 kJ/mol  
99+
125,300.00 kJ/mol  
1
9th Energy Level
5,580.00 kJ/mol  
99+
134,700.00 kJ/mol  
1
10th Energy Level
5,580.00 kJ/mol  
99+
144,300.00 kJ/mol  
1
11th Energy Level
5,580.00 kJ/mol  
99+
26,130.00 kJ/mol  
12
12th Energy Level
5,580.00 kJ/mol  
99+
28,750.00 kJ/mol  
36
13th Energy Level
5,580.00 kJ/mol  
99+
34,230.00 kJ/mol  
10
14th Energy Level
558.30 kJ/mol  
99+
37,066.00 kJ/mol  
12
15th Energy Level
55,800.00 kJ/mol  
99+
97,510.00 kJ/mol  
2
16th Energy Level
558.30 kJ/mol  
99+
105,800.00 kJ/mol  
2
17th Energy Level
558.30 kJ/mol  
99+
114,300.00 kJ/mol  
3
18th Energy Level
5,580.00 kJ/mol  
99+
125,300.00 kJ/mol  
4
19th Energy Level
558.30 kJ/mol  
99+
134,700.00 kJ/mol  
5
20th Energy Level
558.00 kJ/mol  
99+
144,300.00 kJ/mol  
7
21st Energy Level
558.30 kJ/mol  
99+
157,700.00 kJ/mol  
7
22nd Energy Level
558.00 kJ/mol  
99+
166,090.00 kJ/mol  
6
23rd Energy Level
5,581.00 kJ/mol  
24
653.80 kJ/mol  
99+
24th Energy Level
558.30 kJ/mol  
99+
653.80 kJ/mol  
32
25th Energy Level
558.00 kJ/mol  
99+
653.80 kJ/mol  
34
26th Energy Level
558.30 kJ/mol  
99+
653.80 kJ/mol  
33
27th Energy Level
558.30 kJ/mol  
99+
652.90 kJ/mol  
34
28th Energy Level
558.30 kJ/mol  
99+
653.80 kJ/mol  
39
29th Energy Level
558.30 kJ/mol  
99+
653.80 kJ/mol  
40
30th Energy Level
558.00 kJ/mol  
99+
653.80 kJ/mol  
36
Electrochemical Equivalent
1.43 g/amp-hr  
99+
0.32 g/amp-hr  
99+
Electron Work Function
4.12 eV  
31
4.50 eV  
19
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
49  
99+
24  
99+
Electron Configuration
[Kr] 4d10 5s2 5p1  
[Ar] 3d5 4s1  
Crystal Structure
Tetragonal (TETR)  
Body Centered Cubic (BCC)  
Crystal Lattice
TETR-Crystal-Structure-of-Indium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
49  
99+
24  
99+
Number of Neutrons
66  
99+
28  
99+
Number of Electrons
49  
99+
24  
99+
Radius of an Atom
  
  
Atomic Radius
167.00 pm  
26
128.00 pm  
99+
Covalent Radius
142.00 pm  
99+
139.00 pm  
99+
Van der Waals Radius
193.00 pm  
38
200.00 pm  
35
Atomic Weight
114.82 amu  
99+
52.00 amu  
99+
Atomic Volume
15.70 cm3/mol  
99+
7.23 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Cadmium
  
Vanadium
  
Next Element
Tin
  
Manganese
  
Valence Electron Potential
54.00 (-eV)  
26
170.00 (-eV)  
4
Lattice Constant
325.23 pm  
99+
291.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.56  
99+
1.86  
4
Mechanical
Density
  
  
Density At Room Temperature
7.31 g/cm3  
99+
7.19 g/cm3  
99+
Density When Liquid (at m.p.)
7.02 g/cm3  
99+
6.30 g/cm3  
99+
Tensile Strength
2.50 MPa  
99+
689.00 MPa  
7
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.01 (Pa)  
11
0.00 (Pa)  
26
Vapor Pressure at 2000 K
0.00 (Pa)  
24
774.00 (Pa)  
1
Elasticity properties
  
  
Shear Modulus
18.00 GPa  
99+
115.00 GPa  
9
Bulk Modulus
46.90 GPa  
27
160.00 GPa  
11
Young's Modulus
11.00 GPa  
99+
279.00 GPa  
8
Poisson Ratio
0.44  
3
0.21  
33
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
7.31  
99+
7.19  
99+
Magnetic Ordering
Diamagnetic  
Antiferromagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
17
Susceptibility
0.00  
34
0.00  
10
Electrical Properties
  
  
Electrical Property
Conductor  
-  
Resistivity
83.70 nΩ·m  
34
125.00 nΩ·m  
27
Electrical Conductivity
0.12 106/cm Ω  
20
0.08 106/cm Ω  
30
Electron Affinity
28.90 kJ/mol  
37
64.30 kJ/mol  
17
Thermal
Specific Heat
0.23 J/(kg K)  
27
0.45 J/(kg K)  
12
Molar Heat Capacity
26.74 J/mol·K  
32
23.35 J/mol·K  
99+
Thermal Conductivity
81.80 W/m·K  
21
93.90 W/m·K  
17
Critical Temperature
429.75 K  
99+
1,907.00 K  
24
Thermal Expansion
32.10 µm/(m·K)  
9
4.90 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
226.40 kJ/mol  
99+
348.80 kJ/mol  
35
Enthalpy of Fusion
3.28 kJ/mol  
99+
15.31 kJ/mol  
20
Enthalpy of Atomization
242.70 kJ/mol  
99+
397.50 kJ/mol  
27
Standard Molar Entropy
57.80 J/mol.K  
27
23.80 J/mol.K  
99+
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