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Properties of Aluminium and Polonium


Properties of Polonium & Aluminium


Physical Properties

Melting Point
660.37 °C   
99+
254.00 °C   
99+

Boiling Point
2,467.00 °C   
99+
962.00 °C   
99+

Hardness
  
  

Mohs Hardness
2.75   
13
Not Available   

Brinell Hardness
160.00 MPa   
99+
Not Available   

Vickers Hardness
160.00 MPa   
35
Not Available   

Optical Properties
  
  

Refractive Index
Not Available   
Not Available   

Reflectivity
71.00 %   
10
Not Available   

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

Allotropes
No   
Yes   

α Allotropes
Not Available   
?
simple cubic (metallic)Α-Polonium
  

β Allotropes
Not Available   
?
rhombohedral (metallic)Β-Polonium
  

γ Allotropes
Not Available   
Not Available   

Chemical Properties

Chemical Formula
Al   
Po   

Isotopes
  
  

Known Isotopes
11   
27
29   
10

Electronegativity
  
  

Pauling Electronegativity
1.61   
22
2.00   
7

Sanderson Electronegativity
1.71   
13
Not Available   

Allred Rochow Electronegativity
1.47   
14
1.76   
2

Mulliken-Jaffe Electronegativity
1.83   
8
2.48   
1

Allen Electronegativity
1.61   
20
2.19   
2

Electropositivity
  
  

Pauling Electropositivity
2.39   
32
2.00   
99+

Ionization Energies
  
  

1st Energy Level
577.50 kJ/mol   
99+
812.10 kJ/mol   
14

2nd Energy Level
1,816.70 kJ/mol   
19
Not Available   

3rd Energy Level
2,744.80 kJ/mol   
38
Not Available   

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

Electron Work Function
4.28 eV   
19
Not Available   

Other Chemical Properties
?
Stable metals are non radioactive metals and have zero valence electrons in the outer shell.Chemical Stability, 
?
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
  
?
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
  

Mechanical Properties

Density
  
  

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

Density When Liquid (at m.p.)
2.38 g/cm3   
99+
9.40 g/cm3   
19

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)   
18
Not Available   

Vapor Pressure at 2000 K
Not Available   
Not Available   

Tensile Strength
40.00 MPa   
19
Not Available   

Viscosity
Not Available   
Not Available   

Elasticity properties
  
  

Shear Modulus
26.00 GPa   
29
Not Available   

Bulk Modulus
76.00 GPa   
18
Not Available   

Young's Modulus
70.00 GPa   
28
Not Available   

Poisson Ratio
0.35   
9
Not Available   

Other Mechanical Properties
?
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
  
NA   

Periodic Table

Symbol
Al   
Po   

Group Number
13   
5
16   
2

Period Number
3   
6   

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 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
  

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
  
?
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
  

Atomic Properties

Atomic Number
13   
99+
84   
32

Atomic Weight
26.98 amu   
99+
209.00 amu   
28

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

Electron Configuration
[Ne] 3s2 3p1   
[Xe] 4f14 5d10 6s2 6p4   

Valence Electron Potential
80.70 (-eV)   
17
Not Available   

Atom
  
  

Number of Protons
13   
99+
84   
32

Number of Neutrons
14   
99+
125   
19

Number of Electrons
13   
99+
84   
32

Crystal Structure
?
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.Face Centered Cubic (FCC)
  
?
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)
  

Crystal Lattice
FCC-Crystal-Structure-of-Aluminium.jpg#100   
MON-Crystal-Structure-of-Polonium.jpg#100   

Radius of an Atom
  
  

Atomic Radius
143.00 pm   
37
168.00 pm   
23

Covalent Radius
121.00 pm   
99+
140.00 pm   
99+

Van der Waals Radius
184.00 pm   
34
197.00 pm   
29

Lattice Constant
404.95 pm   
22
335.90 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
Potassium
  
Francium
  

Previous Element
Magnesium
  
Bismuth
  

Magnetic Properties

Electrical Properties
  
  

Resistivity
28.20 nΩ·m   
99+
0.40 nΩ·m   
99+

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

Electron Affinity
42.50 kJ/mol   
26
183.30 kJ/mol   
3

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
2.72   
99+
9.32   
31

Magnetic Ordering
?
Paramagnetic metals are slightly attracted by magnet, but they can’t retain the magnetic effect once they are removed from the magnetic field.Paramagnetic
  
?
Nonmagnetic metals are non magnetic in nature and do not show or exhibit any magnetic properties.Nonmagnetic
  

Permeability
0.00 H/m   
4
Not Available   

Susceptibility
0.00   
3
Not Available   

Thermal Properties

Specific Heat
0.90 J/(kg K)   
5
0.12 J/(kg K)   
40

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

Critical Temperature
Not Available   
Not Available   

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

Thermal Expansion
23.10 µm/(m·K)   
17
23.50 µm/(m·K)   
16

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

Enthalpy
  
  

Enthalpy of Vaporization
293.70 kJ/mol   
31
60.30 kJ/mol   
99+

Enthalpy of Fusion
10.67 kJ/mol   
35
13.00 kJ/mol   
26

Enthalpy of Atomization
322.20 kJ/mol   
31
134.00 kJ/mol   
99+

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