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Scandium vs Manganese

Scandium
Manganese
Manganese vs Scandium


Periodic Table
Symbol
Sc   
Mn   
Group Number
3   
15
7   
11
Period Number
4   
4   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7440202   
99+
7439965   
99+
Space Group Name
P63/mmc   
I_ 43m   
Space Group Number
194.00   
5
217.00   
4
Facts
Interesting Facts
  • Scandium is known as one of the rare earth elements.
  • Scandium metal found in rare minerals called Wolframite .
  
  • Manganese is an essential trace element in all forms of life.
  • Manganese metal oxidizes very easily, but it does not fuse that easily.
  
Sources
Found in Minerals, Mining, Ores of metals, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Lars Fredrik Nilson   
Johann Gottlieb Gahn   
Discovery
In 1879   
In 1774   
Abundance
  
  
Abundance In Universe
3 * 10-6 %   
15
8 * 10-4 %   
8
Abundance In Sun
~0.000004 %   
16
~0.001 %   
8
Abundance In Meteorites
0.00 %   
18
0.27 %   
8
Abundance In Earth's Crust
0.00 %   
23
0.11 %   
8
Abundance In Oceans
0.00 %   
32
0.00 %   
13
Abundance In Humans
Not Available   
0.00 %   
13
Uses
Uses & Benefits
  • 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.
  
  • This metal is very brittle hence it mostly not used as a pure metal, but its alloys are very useful
  • Its alloy Manganese steel is extremely strong and used in railway tracks, safes, prison bars and riffle barrels.
  
Industrial Uses
Electrical Industry, Electronic Industry   
Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Non Toxic   
Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.01 Blood/mg dm-3   
22
0.08 Blood/mg dm-3   
14
In Bone
0.00 p.p.m.   
34
100.00 p.p.m.   
8
Physical Properties
Melting Point
1,539.00 °C   
24
1,245.00 °C   
37
Boiling Point
2,832.00 °C   
35
1,962.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery White   
Silver   
Luster
Lustrous   
Metallic   
Hardness
  
  
Mohs Hardness
Not Available   
6.00   
6
Brinell Hardness
750.00 MPa   
12
196.00 MPa   
99+
Speed of Sound
Not Available   
5,150.00 m/s   
7
Optical Properties
  
  
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
Sc   
Mn   
Isotopes
  
  
Known Isotopes
13   
26
21   
18
Electronegativity
  
  
Pauling Electronegativity
1.36   
29
1.55   
25
Sanderson Electronegativity
1.02   
21
2.20   
7
Allred Rochow Electronegativity
1.20   
27
1.60   
9
Allen Electronegativity
1.19   
36
1.75   
15
Electropositivity
  
  
Pauling Electropositivity
2.64   
25
2.45   
29
Ionization Energies
  
  
1st Energy Level
633.10 kJ/mol   
99+
717.30 kJ/mol   
30
2nd Energy Level
1,235.00 kJ/mol   
99+
1,509.00 kJ/mol   
39
3rd Energy Level
2,388.60 kJ/mol   
99+
3,248.00 kJ/mol   
21
4th Energy Level
7,090.60 kJ/mol   
6
4,940.00 kJ/mol   
20
5th Energy Level
8,843.00 kJ/mol   
6
6,990.00 kJ/mol   
17
6th Energy Level
10,679.00 kJ/mol   
7
9,220.00 kJ/mol   
16
7th Energy level
13,310.00 kJ/mol   
8
11,500.00 kJ/mol   
16
8th Energy Level
15,250.00 kJ/mol   
11
18,770.00 kJ/mol   
5
9th Energy Level
17,370.00 kJ/mol   
14
21,400.00 kJ/mol   
6
10th Energy Level
21,726.00 kJ/mol   
13
23,960.00 kJ/mol   
9
11th Energy Level
24,102.00 kJ/mol   
16
27,590.00 kJ/mol   
10
12th Energy Level
66,320.00 kJ/mol   
2
30,330.00 kJ/mol   
10
13th Energy Level
73,010.00 kJ/mol   
2
33,150.00 kJ/mol   
11
14th Energy Level
80,160.00 kJ/mol   
3
38,880.00 kJ/mol   
10
15th Energy Level
89,490.00 kJ/mol   
4
41,987.00 kJ/mol   
13
16th Energy Level
97,400.00 kJ/mol   
5
109,480.00 kJ/mol   
1
17th Energy Level
105,600.00 kJ/mol   
6
118,100.00 kJ/mol   
2
18th Energy Level
117,000.00 kJ/mol   
7
127,100.00 kJ/mol   
3
19th Energy Level
124,270.00 kJ/mol   
8
138,600.00 kJ/mol   
4
20th Energy Level
Not Available   
148,500.00 kJ/mol   
6
21st Energy Level
Not Available   
158,600.00 kJ/mol   
6
22nd Energy Level
Not Available   
172,500.00 kJ/mol   
5
23rd Energy Level
Not Available   
181,380.00 kJ/mol   
5
Electrochemical Equivalent
0.56 g/amp-hr   
99+
0.29 g/amp-hr   
99+
Electron Work Function
3.50 eV   
31
4.10 eV   
25
Other Chemical Properties
Corrosion, Flammable, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
21   
99+
25   
99+
Electron Configuration
[Ar] 3d1 4s2   
[Ar] 3d5 4s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Scandium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
21   
99+
25   
99+
Number of Neutrons
24   
99+
30   
99+
Number of Electrons
21   
99+
25   
99+
Radius of an Atom
  
  
Atomic Radius
162.00 pm   
26
127.00 pm   
99+
Covalent Radius
170.00 pm   
25
139.00 pm   
99+
Van der Waals Radius
211.00 pm   
25
200.00 pm   
28
Atomic Weight
44.96 amu   
99+
54.94 amu   
99+
Atomic Volume
15.00 cm3/mol   
34
1.39 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Calcium
  
Chromium
  
Next Element
Titanium
  
Iron
  
Valence Electron Potential
58.00 (-eV)   
24
220.00 (-eV)   
2
Lattice Constant
330.90 pm   
99+
891.25 pm   
1
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
1.59   
7
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
2.99 g/cm3   
99+
7.21 g/cm3   
99+
Density When Liquid (at m.p.)
2.80 g/cm3   
99+
5.95 g/cm3   
99+
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
22
0.00 (Pa)   
12
Vapor Pressure at 2000 K
91.30 (Pa)   
3
Not Available   
Elasticity properties
  
  
Shear Modulus
29.10 GPa   
24
Not Available   
Bulk Modulus
56.60 GPa   
21
120.00 GPa   
14
Young's Modulus
74.40 GPa   
26
198.00 GPa   
12
Poisson Ratio
0.28   
18
Not Available   
Other Mechanical Properties
NA   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
2.99   
99+
7.21   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
562.00 nΩ·m   
10
1.44 nΩ·m   
99+
Electrical Conductivity
0.02 106/cm Ω   
99+
0.01 106/cm Ω   
99+
Electron Affinity
18.10 kJ/mol   
33
0.00 kJ/mol   
40
Thermal Properties
Specific Heat
0.60 J/(kg K)   
8
0.48 J/(kg K)   
11
Molar Heat Capacity
25.52 J/mol·K   
37
26.32 J/mol·K   
29
Thermal Conductivity
15.80 W/m·K   
99+
7.81 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
10.20 µm/(m·K)   
39
21.70 µm/(m·K)   
21
Enthalpy
  
  
Enthalpy of Vaporization
314.20 kJ/mol   
28
219.70 kJ/mol   
99+
Enthalpy of Fusion
14.10 kJ/mol   
25
14.64 kJ/mol   
23
Enthalpy of Atomization
343.00 kJ/mol   
28
280.30 kJ/mol   
38
Standard Molar Entropy
34.60 J/mol.K   
99+
32.00 J/mol.K   
99+
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