Home
 Compare Metals

Aluminium vs Chromium

Aluminium
Chromium
Chromium vs Aluminium


Periodic Table
Symbol
Al  
Cr  
Group Number
13  
5
6  
12
Period Number
3  
4  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7429905  
99+
7440473  
39
Space Group Name
Fm_ 3m  
Im_ 3m  
Space Group Number
225.00  
2
229.00  
1
Facts
Interesting Facts
  • Aluminum’s abundance percentage is more as it is found in more than 260 minerals.
  • Pure Aluminum always reacts with oxygen rapidly.
  • It is a good conductor of heat and electricity and used in transmission lines.
  
  • 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
By Electrolysis Process, Earth's crust, Mining  
Found in Minerals, Mining, Ores of metals, Ores of Minerals  
History
  
  
Who Discovered
Hans Christian Oersted  
Louis Nicolas Vauquelin  
Discovery
In 1825  
In Between 1797 - 1798  
Abundance
  
  
Abundance In Universe
5 * 10-3 %  
5
1.5 * 10-3 %  
7
Abundance In Sun
~0.006 %  
5
~0.002 %  
7
Abundance In Meteorites
0.91 %  
5
0.30 %  
7
Abundance In Earth's Crust
8.10 %  
1
0.01 %  
13
Abundance In Oceans
0.00 %  
6
0.00 %  
16
Abundance In Humans
0.00 %  
10
0.00 %  
16
Uses
Uses & Benefits
  • Aluminum is used in a various products; for example, cans, foils, kitchen utensils, window frames, beer kegs and aero plane parts, automobile parts, etc.
  
  • 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, Ammunition Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry  
Automobile Industry, Chemical Industry  
Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing  
NA  
Other Uses
Alloys, Jewellery, Sculptures, Statues  
Alloys  
Biological Properties
  
  
Toxicity
Non Toxic  
Highly Toxic  
Present in Human Body
Yes  
Yes  
In Blood
0.39 Blood/mg dm-3  
9
0.11 Blood/mg dm-3  
12
In Bone
27.00 p.p.m.  
11
0.33 p.p.m.  
21
Physical Properties
Melting Point
660.37 °C  
99+
1,857.00 °C  
14
Boiling Point
2,467.00 °C  
99+
2,672.00 °C  
39
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silver  
Luster
Metallic  
Metallic  
Hardness
  
  
Mohs Hardness
2.75  
13
8.50  
1
Brinell Hardness
160.00 MPa  
99+
687.00 MPa  
16
Vickers Hardness
160.00 MPa  
35
1,060.00 MPa  
10
Speed of Sound
5,000.00 m/s  
10
5,940.00 m/s  
5
Optical Properties
  
  
Reflectivity
71.00 %  
10
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
Al  
Cr  
Isotopes
  
  
Known Isotopes
11  
27
21  
18
Electronegativity
  
  
Pauling Electronegativity
1.61  
22
1.66  
18
Sanderson Electronegativity
1.71  
13
1.66  
14
Allred Rochow Electronegativity
1.47  
14
1.56  
10
Mulliken-Jaffe Electronegativity
1.83  
8
Not Available  
Allen Electronegativity
1.61  
20
1.65  
19
Electropositivity
  
  
Pauling Electropositivity
2.39  
32
2.34  
36
Ionization Energies
  
  
1st Energy Level
577.50 kJ/mol  
99+
26,130.00 kJ/mol  
1
2nd Energy Level
1,816.70 kJ/mol  
19
28,750.00 kJ/mol  
1
3rd Energy Level
2,744.80 kJ/mol  
38
34,230.00 kJ/mol  
1
4th Energy Level
11,577.00 kJ/mol  
3
37,066.00 kJ/mol  
1
5th Energy Level
14,842.00 kJ/mol  
2
97,510.00 kJ/mol  
1
6th Energy Level
18,379.00 kJ/mol  
2
105,800.00 kJ/mol  
1
7th Energy level
23,326.00 kJ/mol  
2
114,300.00 kJ/mol  
1
8th Energy Level
27,465.00 kJ/mol  
2
125,300.00 kJ/mol  
1
9th Energy Level
31,853.00 kJ/mol  
2
134,700.00 kJ/mol  
1
10th Energy Level
38,473.00 kJ/mol  
4
144,300.00 kJ/mol  
1
11th Energy Level
42,647.00 kJ/mol  
5
26,130.00 kJ/mol  
12
12th Energy Level
Not Available  
28,750.00 kJ/mol  
13
13th Energy Level
Not Available  
34,230.00 kJ/mol  
10
14th Energy Level
Not Available  
37,066.00 kJ/mol  
12
15th Energy Level
Not Available  
97,510.00 kJ/mol  
1
16th Energy Level
Not Available  
105,800.00 kJ/mol  
2
17th Energy Level
Not Available  
114,300.00 kJ/mol  
3
18th Energy Level
Not Available  
125,300.00 kJ/mol  
4
19th Energy Level
Not Available  
134,700.00 kJ/mol  
5
20th Energy Level
Not Available  
144,300.00 kJ/mol  
7
21st Energy Level
Not Available  
157,700.00 kJ/mol  
7
22nd Energy Level
Not Available  
166,090.00 kJ/mol  
6
Electrochemical Equivalent
0.34 g/amp-hr  
99+
0.32 g/amp-hr  
99+
Electron Work Function
4.28 eV  
19
4.50 eV  
14
Other Chemical Properties
Chemical Stability, Ionization, Radioactive Isotopes  
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility  
Atomic Properties
Atomic Number
13  
99+
24  
99+
Electron Configuration
[Ne] 3s2 3p1  
[Ar] 3d5 4s1  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Aluminium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
13  
99+
24  
99+
Number of Neutrons
14  
99+
28  
99+
Number of Electrons
13  
99+
24  
99+
Radius of an Atom
  
  
Atomic Radius
143.00 pm  
37
128.00 pm  
99+
Covalent Radius
121.00 pm  
99+
139.00 pm  
99+
Van der Waals Radius
184.00 pm  
34
200.00 pm  
28
Atomic Weight
26.98 amu  
99+
52.00 amu  
99+
Atomic Volume
10.00 cm3/mol  
99+
7.23 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Magnesium
  
Vanadium
  
Next Element
Potassium
  
Manganese
  
Valence Electron Potential
80.70 (-eV)  
17
170.00 (-eV)  
4
Lattice Constant
404.95 pm  
22
291.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
Not Available  
Not Available  
Mechanical Properties
Density
  
  
Density At Room Temperature
2.70 g/cm3  
99+
7.19 g/cm3  
99+
Density When Liquid (at m.p.)
2.38 g/cm3  
99+
6.30 g/cm3  
40
Tensile Strength
40.00 MPa  
19
689.00 MPa  
7
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
18
0.00 (Pa)  
24
Vapor Pressure at 2000 K
Not Available  
774.00 (Pa)  
1
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
29
115.00 GPa  
9
Bulk Modulus
76.00 GPa  
18
160.00 GPa  
11
Young's Modulus
70.00 GPa  
28
279.00 GPa  
8
Poisson Ratio
0.35  
9
0.21  
32
Other Mechanical Properties
Ductile, Malleable  
NA  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
2.72  
99+
7.19  
99+
Magnetic Ordering
Paramagnetic  
Antiferromagnetic  
Permeability
0.00 H/m  
4
Not Available  
Susceptibility
0.00  
3
Not Available  
Electrical Properties
  
  
Electrical Property
Conductor  
NA  
Resistivity
28.20 nΩ·m  
99+
125.00 nΩ·m  
27
Electrical Conductivity
0.38 106/cm Ω  
4
0.08 106/cm Ω  
25
Electron Affinity
42.50 kJ/mol  
26
64.30 kJ/mol  
15
Thermal Properties
Specific Heat
0.90 J/(kg K)  
5
0.45 J/(kg K)  
12
Molar Heat Capacity
24.20 J/mol·K  
99+
23.35 J/mol·K  
99+
Thermal Conductivity
237.00 W/m·K  
4
93.90 W/m·K  
17
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
23.10 µm/(m·K)  
17
4.90 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
293.70 kJ/mol  
31
348.80 kJ/mol  
24
Enthalpy of Fusion
10.67 kJ/mol  
35
15.31 kJ/mol  
20
Enthalpy of Atomization
322.20 kJ/mol  
31
397.50 kJ/mol  
21
Standard Molar Entropy
28.30 J/mol.K  
99+
23.80 J/mol.K  
99+
Periodic Table >>
<< All

Compare Post Transition Metals

Post-Transition Metals

Post-Transition Metals

» More Post-Transition Metals

Compare Post Transition Metals

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