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Aluminium vs Scandium


Scandium vs Aluminium


Periodic Table

Symbol
Al   
Sc   

Group Number
13   
5
3   
15

Period Number
3   
4   

Block
p block   
d block   

Element Family
Post-​Transition   
Transition Metal   

CAS Number
7429905   
99+
7440202   
99+

Space Group Name
Fm_ 3m   
P63/mmc   

Space Group Number
225.00   
2
194.00   
5

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.
  
  • Scandium is known as one of the rare earth elements.
  • Scandium metal found in rare minerals called Wolframite .
  

Sources
By Electrolysis Process, Earth's crust, Mining   
Found in Minerals, Mining, Ores of metals, Ores of Minerals   

History
  
  

Who Discovered
Hans Christian Oersted   
Lars Fredrik Nilson   

Discovery
In 1825   
In 1879   

Abundance
  
  

Abundance In Universe
5 * 10-3 %   
5
3 * 10-6 %   
15

Abundance In Sun
~0.006 %   
5
~0.000004 %   
16

Abundance In Meteorites
0.91 %   
5
0.00 %   
18

Abundance In Earth's Crust
8.10 %   
1
0.00 %   
23

Abundance In Oceans
0.00 %   
6
0.00 %   
32

Abundance In Humans
0.00 %   
10
Not Available   

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.
  
  • Uses of Scandium are limited to research purpose only. However, it has very low density and higher melting point.
  • Its compounds like scandium iodide is used in mercury vapor lamps to produce very bright white light.
  

Industrial Uses
Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
Electrical Industry, Electronic Industry   

Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
NA   

Other Uses
Alloys, Jewellery, Sculptures, Statues   
Alloys   

Biological Properties
  
  

Toxicity
Non Toxic   
Non Toxic   

Present in Human Body
Yes   
Yes   

In Blood
0.39 Blood/mg dm-3   
9
0.01 Blood/mg dm-3   
22

In Bone
27.00 p.p.m.   
11
0.00 p.p.m.   
34

Physical Properties

Melting Point
660.37 °C   
99+
1,539.00 °C   
24

Boiling Point
2,467.00 °C   
99+
2,832.00 °C   
35

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery Gray   
Silvery White   

Luster
Metallic   
Lustrous   

Hardness
  
  

Mohs Hardness
2.75   
13
Not Available   

Brinell Hardness
160.00 MPa   
99+
750.00 MPa   
12

Vickers Hardness
160.00 MPa   
35
Not Available   

Speed of Sound
5,000.00 m/s   
10
Not Available   

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   
Sc   

Isotopes
  
  

Known Isotopes
11   
27
13   
26

Electronegativity
  
  

Pauling Electronegativity
1.61   
22
1.36   
29

Sanderson Electronegativity
1.71   
13
1.02   
21

Allred Rochow Electronegativity
1.47   
14
1.20   
27

Mulliken-Jaffe Electronegativity
1.83   
8
Not Available   

Allen Electronegativity
1.61   
20
1.19   
36

Electropositivity
  
  

Pauling Electropositivity
2.39   
32
2.64   
25

Ionization Energies
  
  

1st Energy Level
577.50 kJ/mol   
99+
633.10 kJ/mol   
99+

2nd Energy Level
1,816.70 kJ/mol   
19
1,235.00 kJ/mol   
99+

3rd Energy Level
2,744.80 kJ/mol   
38
2,388.60 kJ/mol   
99+

4th Energy Level
11,577.00 kJ/mol   
3
7,090.60 kJ/mol   
6

5th Energy Level
14,842.00 kJ/mol   
2
8,843.00 kJ/mol   
6

6th Energy Level
18,379.00 kJ/mol   
2
10,679.00 kJ/mol   
7

7th Energy level
23,326.00 kJ/mol   
2
13,310.00 kJ/mol   
8

8th Energy Level
27,465.00 kJ/mol   
2
15,250.00 kJ/mol   
11

9th Energy Level
31,853.00 kJ/mol   
2
17,370.00 kJ/mol   
14

10th Energy Level
38,473.00 kJ/mol   
4
21,726.00 kJ/mol   
13

11th Energy Level
42,647.00 kJ/mol   
5
24,102.00 kJ/mol   
16

12th Energy Level
Not Available   
66,320.00 kJ/mol   
2

13th Energy Level
Not Available   
73,010.00 kJ/mol   
2

14th Energy Level
Not Available   
80,160.00 kJ/mol   
3

15th Energy Level
Not Available   
89,490.00 kJ/mol   
4

16th Energy Level
Not Available   
97,400.00 kJ/mol   
5

17th Energy Level
Not Available   
105,600.00 kJ/mol   
6

18th Energy Level
Not Available   
117,000.00 kJ/mol   
7

19th Energy Level
Not Available   
124,270.00 kJ/mol   
8

Electrochemical Equivalent
0.34 g/amp-hr   
99+
0.56 g/amp-hr   
99+

Electron Work Function
4.28 eV   
19
3.50 eV   
31

Other Chemical Properties
Chemical Stability, Ionization, Radioactive Isotopes   
Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility   

Atomic Properties

Atomic Number
13   
99+
21   
99+

Electron Configuration
[Ne] 3s2 3p1   
[Ar] 3d1 4s2   

Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
FCC-Crystal-Structure-of-Aluminium.jpg#100   
HCP-Crystal-Structure-of-Scandium.jpg#100   

Atom
  
  

Number of Protons
13   
99+
21   
99+

Number of Neutrons
14   
99+
24   
99+

Number of Electrons
13   
99+
21   
99+

Radius of an Atom
  
  

Atomic Radius
143.00 pm   
37
162.00 pm   
26

Covalent Radius
121.00 pm   
99+
170.00 pm   
25

Van der Waals Radius
184.00 pm   
34
211.00 pm   
25

Atomic Weight
26.98 amu   
99+
44.96 amu   
99+

Atomic Volume
10.00 cm3/mol   
99+
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

Previous Element
Magnesium
  
Calcium
  

Next Element
Potassium
  
Titanium
  

Valence Electron Potential
80.70 (-eV)   
17
58.00 (-eV)   
24

Lattice Constant
404.95 pm   
22
330.90 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
1.59   
7

Mechanical Properties

Density
  
  

Density At Room Temperature
2.70 g/cm3   
99+
2.99 g/cm3   
99+

Density When Liquid (at m.p.)
2.38 g/cm3   
99+
2.80 g/cm3   
99+

Tensile Strength
40.00 MPa   
19
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
18
0.00 (Pa)   
22

Vapor Pressure at 2000 K
Not Available   
91.30 (Pa)   
3

Elasticity properties
  
  

Shear Modulus
26.00 GPa   
29
29.10 GPa   
24

Bulk Modulus
76.00 GPa   
18
56.60 GPa   
21

Young's Modulus
70.00 GPa   
28
74.40 GPa   
26

Poisson Ratio
0.35   
9
0.28   
18

Other Mechanical Properties
Ductile, Malleable   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
2.72   
99+
2.99   
99+

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Permeability
0.00 H/m   
4
Not Available   

Susceptibility
0.00   
3
Not Available   

Electrical Properties
  
  

Electrical Property
Conductor   
Conductor   

Resistivity
28.20 nΩ·m   
99+
562.00 nΩ·m   
10

Electrical Conductivity
0.38 106/cm Ω   
4
0.02 106/cm Ω   
99+

Electron Affinity
42.50 kJ/mol   
26
18.10 kJ/mol   
33

Thermal Properties

Specific Heat
0.90 J/(kg K)   
5
0.60 J/(kg K)   
8

Molar Heat Capacity
24.20 J/mol·K   
99+
25.52 J/mol·K   
37

Thermal Conductivity
237.00 W/m·K   
4
15.80 W/m·K   
99+

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
23.10 µm/(m·K)   
17
10.20 µm/(m·K)   
39

Enthalpy
  
  

Enthalpy of Vaporization
293.70 kJ/mol   
31
314.20 kJ/mol   
28

Enthalpy of Fusion
10.67 kJ/mol   
35
14.10 kJ/mol   
25

Enthalpy of Atomization
322.20 kJ/mol   
31
343.00 kJ/mol   
28

Standard Molar Entropy
28.30 J/mol.K   
99+
34.60 J/mol.K   
99+

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