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Properties of Polonium and Iron


Properties of Iron & Polonium


Physical Properties

Melting Point
254.00 °C   
99+
1,535.00 °C   
25

Boiling Point
962.00 °C   
99+
2,750.00 °C   
37

Hardness
  
  

Mohs Hardness
Not Available   
4.00   
10

Brinell Hardness
Not Available   
200.00 MPa   
40

Vickers Hardness
Not Available   
608.00 MPa   
18

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
Not Available   
65.00 %   
12

Speed of Sound
Not Available   
5,120.00 m/s   
8

Allotropes
Yes   
Yes   

α Allotropes
?
simple cubic (metallic)Α-Polonium
  
?
It forms below 770 °C (the Curie point, TC); Then the Iron becomes magnetic in its alpha form; BCC crystal structureFerrite (Alpha Iron)
  

β Allotropes
?
rhombohedral (metallic)Β-Polonium
  
?
It forms below 912 °C; BCC crystal structureBeta Iron
  

γ Allotropes
Not Available   
?
It forms below 1,394 °C; FCC crystal structureGamma Iron
  

Chemical Properties

Chemical Formula
Po   
Fe   

Isotopes
  
  

Known Isotopes
29   
10
26   
13

Electronegativity
  
  

Pauling Electronegativity
2.00   
7
1.83   
14

Sanderson Electronegativity
Not Available   
2.20   
7

Allred Rochow Electronegativity
1.76   
2
1.64   
8

Mulliken-Jaffe Electronegativity
2.48   
1
Not Available   

Allen Electronegativity
2.19   
2
1.80   
12

Electropositivity
  
  

Pauling Electropositivity
2.00   
99+
2.17   
40

Ionization Energies
  
  

1st Energy Level
812.10 kJ/mol   
14
762.50 kJ/mol   
17

2nd Energy Level
Not Available   
1,561.90 kJ/mol   
36

3rd Energy Level
Not Available   
2,957.00 kJ/mol   
29

Electrochemical Equivalent
3.90 g/amp-hr   
8
0.69 g/amp-hr   
99+

Electron Work Function
Not Available   
4.70 eV   
10

Other Chemical Properties
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Radioactive metals emit particles and radiation from their nuclei. This process comes in the picture because their nuclei experience the intense conflict between two strong forces. This metal also have radioactive isotopes.Radioactive Isotopes, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility
  
?
Corrosion is a process which converts refined metals to their more stable forms, for example, its oxide and hydroxide. This process of metals getting corroded is a gradual destruction of metals by chemical reactions.Corrosion, 
?
Ionization is the process by which an atom or a molecule acquires a negative or positive charge by gaining or losing electrons to form ions, often in conjunction with other chemical changes.Ionization, 
?
Solubility is a chemical property referring to the ability for a given substance, the solute, to dissolve in a solvent.Solubility
  

Mechanical Properties

Density
  
  

Density At Room Temperature
9.20 g/cm3   
99+
7.87 g/cm3   
99+

Density When Liquid (at m.p.)
9.40 g/cm3   
19
6.98 g/cm3   
35

Vapor Pressure
  
  

Vapor Pressure at 1000 K
Not Available   
0.00 (Pa)   
28

Vapor Pressure at 2000 K
Not Available   
36.80 (Pa)   
5

Tensile Strength
Not Available   
11,000.00 MPa   
1

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
Not Available   
82.00 GPa   
11

Bulk Modulus
Not Available   
170.00 GPa   
10

Young's Modulus
Not Available   
211.00 GPa   
9

Poisson Ratio
Not Available   
0.29   
15

Other Mechanical Properties
NA   
?
Ductility of metals defines their ability to deform under tensile stress; this is often characterized by the metals ability to be stretched into a wire.Ductile, 
?
Malleability of metals defines their ability to deform under compressive stress; this is often characterized by the metals ability to form a thin sheet by hammering or rolling.Malleable, 
?
Weldability of metals defines their ability to be welded.This property of metals also known as joinability.Weldable
  

Periodic Table

Symbol
Po   
Fe   

Group Number
16   
2
8   
10

Period Number
6   
4   

Block
?
The p-block is on the right side of the periodic table and includes elements from the six columns beginning with column 13 and ending with column 18. Helium, though being in the top of group 18, is not included in the p-block.p block
  
?
The d-block is on the middle of the periodic table and includes elements from columns 3 through 12. These elements are also known as the transition metals because they show a transitivity in their properties i.e. they show a trend in their properties.d block
  

Element Family
?
All post transition metals are placed in group number 13, 14 and 15 of periodic table. In fact, they are located between Transition Metals and Metalloids. Post transition metals have very poor mechanical properties.Post-​Transition
  
?
What is Transition Metal? All transition metals are placed under the d-block from group number 3 to 12. Transition metals show characteristics like malleability, ductility and are good conductor of electricity.Transition Metal
  

Atomic Properties

Atomic Number
84   
32
26   
99+

Atomic Weight
209.00 amu   
28
55.85 amu   
99+

Atomic Volume
22.23 cm3/mol   
13
7.10 cm3/mol   
99+

Electron Configuration
[Xe] 4f14 5d10 6s2 6p4   
[Ar] 3d6 4s2   

Valence Electron Potential
Not Available   
67.00 (-eV)   
20

Atom
  
  

Number of Protons
84   
32
26   
99+

Number of Neutrons
125   
19
30   
99+

Number of Electrons
84   
32
26   
99+

Crystal Structure
?
The mono-clinic crystal structure is one of the seven lattice point groups. Here vectors of crystal have unequal lengths. Here vectors of crystal have unequal lengths and have two vectors perpendicular to the 3rd oneMonoclinic (MON)
  
?
BCC is a basis type of cubic crystal structure. In crystallography, the cubic crystals structure is a crystal system where the unit cell has a cube shaped structure. This is one of the simplest crystal structure found in crystals of metal.Body Centered Cubic (BCC)
  

Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Radius of an Atom
  
  

Atomic Radius
168.00 pm   
23
126.00 pm   
99+

Covalent Radius
140.00 pm   
99+
132.00 pm   
99+

Van der Waals Radius
197.00 pm   
29
200.00 pm   
28

Lattice Constant
335.90 pm   
99+
286.65 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

Adjacent Atomic Numbers
  
  

Next Element
Francium
  
Cobalt
  

Previous Element
Bismuth
  
Manganese
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
0.40 nΩ·m   
99+
96.10 nΩ·m   
32

Electrical Conductivity
0.02 106/cm Ω   
99+
0.10 106/cm Ω   
20

Electron Affinity
183.30 kJ/mol   
3
15.70 kJ/mol   
34

Electrical Property
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
  
?
Conductor metals have very low resistance to electric currents. They can easily conduct electric current through them.Conductor
  

Magnetic Characteristics
  
  

Specific Gravity
9.32   
31
7.20   
99+

Magnetic Ordering
?
Nonmagnetic metals are non magnetic in nature and do not show or exhibit any magnetic properties.Nonmagnetic
  
Ferromagnetic   

Permeability
Not Available   
6.3 * 10-3 H/m   
1

Susceptibility
Not Available   
2,00,000.00   
1

Thermal Properties

Specific Heat
0.12 J/(kg K)   
40
0.44 J/(kg K)   
13

Thermal Conductivity
20.00 W/m·K   
99+
80.40 W/m·K   
22

Critical Temperature
Not Available   
Not Available   

Molar Heat Capacity
26.40 J/mol·K   
28
25.10 J/mol·K   
99+

Thermal Expansion
23.50 µm/(m·K)   
16
11.80 µm/(m·K)   
33

Standard Molar Entropy
Not Available   
27.30 J/mol.K   
99+

Enthalpy
  
  

Enthalpy of Vaporization
60.30 kJ/mol   
99+
351.00 kJ/mol   
23

Enthalpy of Fusion
13.00 kJ/mol   
26
14.90 kJ/mol   
22

Enthalpy of Atomization
134.00 kJ/mol   
99+
414.20 kJ/mol   
19

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