Home
 Compare Metals

Hafnium Manganese Comparison

Hafnium
Manganese
Manganese Hafnium comparison


Periodic Table
Symbol
Hf   
Mn   
Group Number
4   
14
7   
11
Period Number
6   
4   
Block
d block   
d block   
Element Family
Transition Metal   
Transition Metal   
CAS Number
7440586   
30
7439965   
99+
Space Group Name
P63/mmc   
I_ 43m   
Space Group Number
194.00   
5
217.00   
4
Facts
Interesting Facts
  • Hafnium metal is highly reactive, hence not found free in nature.
  • Hafnium metal as predicated after Mendeleev finished his periodic table.
  
  • Manganese is an essential trace element in all forms of life.
  • Manganese metal oxidizes very easily, but it does not fuse that easily.
  
Sources
By-product Zirconium Refining   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Dirk Coster and George de Hevesy   
Johann Gottlieb Gahn   
Discovery
In 1922   
In 1774   
Abundance
  
  
Abundance In Universe
7 * 10-8 %   
25
8 * 10-4 %   
8
Abundance In Sun
~0.0000001 %   
26
~0.001 %   
8
Abundance In Meteorites
0.00 %   
37
0.27 %   
8
Abundance In Earth's Crust
0.00 %   
31
0.11 %   
8
Abundance In Oceans
0.00 %   
27
0.00 %   
13
Abundance In Humans
Not Available   
0.00 %   
13
Uses
Uses & Benefits
  • It has an ability to absorb neutrons and hence it is used to make control rods in nuclear submarines. And this metal is also used in Plasma welding torches.
  • It alloys with iron, titanium and niobium are very useful.
  
  • 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
Ammunition Industry   
Automobile Industry, Electrical Industry, Electronic Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys, In Nuclear Reactors, Nuclear Research, Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Toxic   
Toxic   
Present in Human Body
No   
Yes   
In Blood
Not Available   
0.08 Blood/mg dm-3   
14
In Bone
Not Available   
100.00 p.p.m.   
8
Physical Properties
Melting Point
2,150.00 °C   
10
1,245.00 °C   
37
Boiling Point
5,400.00 °C   
5
1,962.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Gray   
Silver   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
5.50   
7
6.00   
6
Brinell Hardness
1,450.00 MPa   
6
196.00 MPa   
99+
Vickers Hardness
1,520.00 MPa   
5
Not Available   
Speed of Sound
3,010.00 m/s   
27
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
Hf   
Mn   
Isotopes
  
  
Known Isotopes
32   
7
21   
18
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
1.55   
25
Sanderson Electronegativity
Not Available   
2.20   
7
Allred Rochow Electronegativity
1.23   
25
1.60   
9
Allen Electronegativity
1.16   
37
1.75   
15
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
2.45   
29
Ionization Energies
  
  
1st Energy Level
658.50 kJ/mol   
40
717.30 kJ/mol   
30
2nd Energy Level
1,440.00 kJ/mol   
99+
1,509.00 kJ/mol   
39
3rd Energy Level
2,250.00 kJ/mol   
99+
3,248.00 kJ/mol   
21
4th Energy Level
3,216.00 kJ/mol   
99+
4,940.00 kJ/mol   
20
5th Energy Level
Not Available   
6,990.00 kJ/mol   
17
6th Energy Level
Not Available   
9,220.00 kJ/mol   
16
7th Energy level
Not Available   
11,500.00 kJ/mol   
16
8th Energy Level
Not Available   
18,770.00 kJ/mol   
5
9th Energy Level
Not Available   
21,400.00 kJ/mol   
6
10th Energy Level
Not Available   
23,960.00 kJ/mol   
9
11th Energy Level
Not Available   
27,590.00 kJ/mol   
10
12th Energy Level
Not Available   
30,330.00 kJ/mol   
10
13th Energy Level
Not Available   
33,150.00 kJ/mol   
11
14th Energy Level
Not Available   
38,880.00 kJ/mol   
10
15th Energy Level
Not Available   
41,987.00 kJ/mol   
13
16th Energy Level
Not Available   
109,480.00 kJ/mol   
1
17th Energy Level
Not Available   
118,100.00 kJ/mol   
2
18th Energy Level
Not Available   
127,100.00 kJ/mol   
3
19th Energy Level
Not Available   
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
1.66 g/amp-hr   
99+
0.29 g/amp-hr   
99+
Electron Work Function
3.90 eV   
27
4.10 eV   
25
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes   
Atomic Properties
Atomic Number
72   
99+
25   
99+
Electron Configuration
[Xe] 4f14 5d2 6s2   
[Ar] 3d5 4s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
72   
99+
25   
99+
Number of Neutrons
106   
29
30   
99+
Number of Electrons
72   
99+
25   
99+
Radius of an Atom
  
  
Atomic Radius
159.00 pm   
28
127.00 pm   
99+
Covalent Radius
175.00 pm   
23
139.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
200.00 pm   
28
Atomic Weight
178.49 amu   
39
54.94 amu   
99+
Atomic Volume
13.60 cm3/mol   
38
1.39 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lutetium
  
Chromium
  
Next Element
Tantalum
  
Iron
  
Valence Electron Potential
81.00 (-eV)   
16
220.00 (-eV)   
2
Lattice Constant
319.64 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
1.58   
12
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
13.31 g/cm3   
26
7.21 g/cm3   
99+
Density When Liquid (at m.p.)
12.00 g/cm3   
12
5.95 g/cm3   
99+
Tensile Strength
445.00 MPa   
8
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
12
Vapor Pressure at 2000 K
0.00 (Pa)   
24
Not Available   
Elasticity properties
  
  
Shear Modulus
30.00 GPa   
23
Not Available   
Bulk Modulus
110.00 GPa   
15
120.00 GPa   
14
Young's Modulus
78.00 GPa   
25
198.00 GPa   
12
Poisson Ratio
0.37   
7
Not Available   
Other Mechanical Properties
Ductile, Malleable   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
13.31   
18
7.21   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
331.00 nΩ·m   
14
1.44 nΩ·m   
99+
Electrical Conductivity
0.03 106/cm Ω   
39
0.01 106/cm Ω   
99+
Electron Affinity
0.00 kJ/mol   
40
0.00 kJ/mol   
40
Thermal Properties
Specific Heat
0.14 J/(kg K)   
37
0.48 J/(kg K)   
11
Molar Heat Capacity
25.73 J/mol·K   
36
26.32 J/mol·K   
29
Thermal Conductivity
23.00 W/m·K   
99+
7.81 W/m·K   
99+
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
5.90 µm/(m·K)   
99+
21.70 µm/(m·K)   
21
Enthalpy
  
  
Enthalpy of Vaporization
661.10 kJ/mol   
5
219.70 kJ/mol   
99+
Enthalpy of Fusion
25.10 kJ/mol   
8
14.64 kJ/mol   
23
Enthalpy of Atomization
703.00 kJ/mol   
5
280.30 kJ/mol   
38
Standard Molar Entropy
43.60 J/mol.K   
34
32.00 J/mol.K   
99+
Summary >>
<< Thermal

Compare Transition Metals

Transition Metals

Transition Metals

» More Transition Metals

Compare Transition Metals

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