Home
 Compare Metals

Polonium vs Manganese

Polonium
Manganese
Manganese vs Polonium


Periodic Table
Symbol
Po  
Mn  
Group Number
16  
2
7  
11
Period Number
6  
4  
Block
p block  
d block  
Element Family
Post-​Transition  
Transition Metal  
CAS Number
7440086  
99+
7439965  
99+
Space Group Name
Pm-3m  
I_ 43m  
Space Group Number
221.00  
4
217.00  
5
Facts
Interesting Facts
  • Polonium was the first radioactive element to be discovered.
  • Polonium element and its compounds are highly radioactive.
  • Its alloy with Beryllium provides source of neutrons.
  
  • Manganese is an essential trace element in all forms of life.
  • Manganese metal oxidizes very easily, but it does not fuse that easily.
  
Sources
Mining, Ores of metals  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Pierre Curie and Marie Curie  
Johann Gottlieb Gahn  
Discovery
In 1898  
In 1774  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
9
Abundance In Sun
-  
0.00 %  
8
Abundance In Meteorites
-  
0.27 %  
8
Abundance In Earth's Crust
0.00 %  
99+
0.11 %  
8
Abundance In Oceans
0.00 %  
99+
0.00 %  
13
Abundance In Humans
0.00 %  
24
0.00 %  
15
Uses
Uses & Benefits
  • Polonium metal has different Allotropes, it is used in antistatic devices and for research purpose.
  • A 1 gram of Polonium can reach a temperature of 500°C, hence it is used as a heat source for space equipment.
  
  • 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
Aerospace Industry, Ammunition Industry  
Automobile Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys  
Biological Properties
  
  
Toxicity
Highly Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.08 Blood/mg dm-3  
14
In Bone
0.00 p.p.m.  
99+
100.00 p.p.m.  
8
Physical
Melting Point
254.00 °C  
99+
1,245.00 °C  
37
Boiling Point
962.00 °C  
99+
1,962.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Silver  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.50  
15
6.00  
6
Brinell Hardness
70.00 MPa  
99+
196.00 MPa  
99+
Vickers Hardness
30.00 MPa  
99+
196.00 MPa  
99+
Speed of Sound
2,260.00 m/s  
99+
5,150.00 m/s  
11
Optical Properties
  
  
Refractive Index
2.70  
3
2.00  
15
Reflectivity
50.00 %  
31
70.00 %  
13
Allotropes
Yes  
No  
α Allotropes
α-polonium  
-  
β Allotropes
β-polonium  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Po  
Mn  
Isotopes
  
  
Known Isotopes
29  
10
21  
18
Electronegativity
  
  
Pauling Electronegativity
2.00  
8
1.55  
26
Sanderson Electronegativity
2.00  
10
2.20  
8
Allred Rochow Electronegativity
1.76  
3
1.60  
10
Mulliken-Jaffe Electronegativity
2.48  
1
1.55  
23
Allen Electronegativity
2.19  
2
1.75  
18
Electropositivity
  
  
Pauling Electropositivity
2.00  
99+
2.45  
29
Ionization Energies
  
  
1st Energy Level
812.10 kJ/mol  
14
717.30 kJ/mol  
30
2nd Energy Level
1,833.20 kJ/mol  
17
1,509.00 kJ/mol  
40
3rd Energy Level
812.10 kJ/mol  
99+
3,248.00 kJ/mol  
21
4th Energy Level
8,121.00 kJ/mol  
7
4,940.00 kJ/mol  
30
5th Energy Level
8,120.00 kJ/mol  
12
6,990.00 kJ/mol  
29
6th Energy Level
8,120.00 kJ/mol  
32
9,220.00 kJ/mol  
22
7th Energy level
8,120.00 kJ/mol  
26
11,500.00 kJ/mol  
16
8th Energy Level
8,120.00 kJ/mol  
26
18,770.00 kJ/mol  
5
9th Energy Level
8,120.00 kJ/mol  
23
21,400.00 kJ/mol  
6
10th Energy Level
8,120.00 kJ/mol  
27
23,960.00 kJ/mol  
9
11th Energy Level
8,120.00 kJ/mol  
26
27,590.00 kJ/mol  
10
12th Energy Level
8,120.00 kJ/mol  
99+
30,330.00 kJ/mol  
32
13th Energy Level
8,120.00 kJ/mol  
19
33,150.00 kJ/mol  
11
14th Energy Level
8,120.00 kJ/mol  
18
38,880.00 kJ/mol  
10
15th Energy Level
81,200.00 kJ/mol  
15
41,987.00 kJ/mol  
99+
16th Energy Level
81,200.00 kJ/mol  
12
109,480.00 kJ/mol  
1
17th Energy Level
812.10 kJ/mol  
32
118,100.00 kJ/mol  
2
18th Energy Level
8,120.00 kJ/mol  
21
127,100.00 kJ/mol  
3
19th Energy Level
812.10 kJ/mol  
29
138,600.00 kJ/mol  
4
20th Energy Level
812.00 kJ/mol  
22
148,500.00 kJ/mol  
6
21st Energy Level
812.10 kJ/mol  
40
158,600.00 kJ/mol  
6
22nd Energy Level
812.00 kJ/mol  
17
172,500.00 kJ/mol  
5
23rd Energy Level
812.10 kJ/mol  
99+
181,380.00 kJ/mol  
5
24th Energy Level
812.10 kJ/mol  
13
650.90 kJ/mol  
34
25th Energy Level
812.10 kJ/mol  
11
717.30 kJ/mol  
24
26th Energy Level
812.10 kJ/mol  
11
650.90 kJ/mol  
35
27th Energy Level
812.10 kJ/mol  
10
650.90 kJ/mol  
36
28th Energy Level
812.10 kJ/mol  
16
650.90 kJ/mol  
99+
29th Energy Level
812.10 kJ/mol  
15
650.90 kJ/mol  
99+
30th Energy Level
812.00 kJ/mol  
11
650.90 kJ/mol  
38
Electrochemical Equivalent
3.90 g/amp-hr  
8
0.29 g/amp-hr  
99+
Electron Work Function
4.50 eV  
19
4.10 eV  
32
Other Chemical Properties
Ionization, Radioactive Isotopes, Solubility  
Ionization, Radioactive Isotopes  
Atomic
Atomic Number
84  
32
25  
99+
Electron Configuration
[Xe] 4f14 5d10 6s2 6p4  
[Ar] 3d5 4s2  
Crystal Structure
Monoclinic (MON)  
Body Centered Cubic (BCC)  
Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
84  
32
25  
99+
Number of Neutrons
125  
20
30  
99+
Number of Electrons
84  
32
25  
99+
Radius of an Atom
  
  
Atomic Radius
168.00 pm  
25
127.00 pm  
99+
Covalent Radius
140.00 pm  
99+
139.00 pm  
99+
Van der Waals Radius
197.00 pm  
36
200.00 pm  
35
Atomic Weight
209.00 amu  
28
54.94 amu  
99+
Atomic Volume
22.23 cm3/mol  
22
1.39 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Bismuth
  
Chromium
  
Next Element
Francium
  
Iron
  
Valence Electron Potential
9.30 (-eV)  
99+
220.00 (-eV)  
2
Lattice Constant
335.90 pm  
99+
891.25 pm  
1
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, π/2  
Lattice C/A Ratio
1.46  
99+
1.55  
99+
Mechanical
Density
  
  
Density At Room Temperature
9.20 g/cm3  
99+
7.21 g/cm3  
99+
Density When Liquid (at m.p.)
9.40 g/cm3  
99+
5.95 g/cm3  
99+
Tensile Strength
50.00 MPa  
38
370.00 MPa  
11
Viscosity
0.00  
26
0.00  
2
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
12
Vapor Pressure at 2000 K
0.00 (Pa)  
37
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
24.00 GPa  
40
40.00 GPa  
19
Bulk Modulus
46.00 GPa  
28
120.00 GPa  
14
Young's Modulus
46.00 GPa  
99+
198.00 GPa  
13
Poisson Ratio
0.23  
30
0.30  
14
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
9.32  
99+
7.21  
99+
Magnetic Ordering
Nonmagnetic  
Paramagnetic  
Permeability
0.00 H/m  
15
0.00 H/m  
7
Susceptibility
0.00  
24
0.00  
12
Electrical Properties
  
  
Electrical Property
Conductor  
Conductor  
Resistivity
0.40 nΩ·m  
99+
1.44 nΩ·m  
99+
Electrical Conductivity
0.02 106/cm Ω  
99+
0.01 106/cm Ω  
99+
Electron Affinity
183.30 kJ/mol  
3
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.48 J/(kg K)  
11
Molar Heat Capacity
26.40 J/mol·K  
36
26.32 J/mol·K  
37
Thermal Conductivity
20.00 W/m·K  
99+
7.81 W/m·K  
99+
Critical Temperature
527.00 K  
99+
1,519.00 K  
40
Thermal Expansion
23.50 µm/(m·K)  
16
21.70 µm/(m·K)  
22
Enthalpy
  
  
Enthalpy of Vaporization
60.30 kJ/mol  
99+
219.70 kJ/mol  
99+
Enthalpy of Fusion
13.00 kJ/mol  
32
14.64 kJ/mol  
25
Enthalpy of Atomization
134.00 kJ/mol  
99+
280.30 kJ/mol  
99+
Standard Molar Entropy
41.10 J/mol.K  
99+
32.00 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!