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Aluminium vs Rubidium

Aluminium
Rubidium
Rubidium vs Aluminium


Periodic Table
Symbol
Al   
Rb   
Group Number
13   
5
1   
17
Period Number
3   
5   
Block
p block   
s block   
Element Family
Post-​Transition   
Alkali   
CAS Number
7429905   
99+
7440177   
99+
Space Group Name
Fm_ 3m   
Im_ 3m   
Space Group Number
225.00   
2
229.00   
1
Facts
Interesting Facts
  • Aluminum’s abundance percentage is more as it is found in more than 260 minerals.
  • Pure Aluminum always reacts with oxygen rapidly.
  • It is a good conductor of heat and electricity and used in transmission lines.
  
  • Rubidium metal is 16th most common element found in the earth crust.
  • Rubidium metal also found in minerals as well as seawater.
  
Sources
By Electrolysis Process, Earth's crust, Mining   
Obtained from Lithium Production.   
History
  
  
Who Discovered
Hans Christian Oersted   
Robert Bunsen and Gustav Kirchhoff   
Discovery
In 1825   
In 1861   
Abundance
  
  
Abundance In Universe
5 * 10-3 %   
5
1 * 10-6 %   
16
Abundance In Sun
~0.006 %   
5
~0.000003 %   
17
Abundance In Meteorites
0.91 %   
5
0.00 %   
19
Abundance In Earth's Crust
8.10 %   
1
0.01 %   
18
Abundance In Oceans
0.00 %   
6
0.00 %   
7
Abundance In Humans
0.00 %   
10
0.00 %   
7
Uses
Uses & Benefits
  • Aluminum is used in a various products; for example, cans, foils, kitchen utensils, window frames, beer kegs and aero plane parts, automobile parts, etc.
  
  • Rubidium's main application is in the glass manufacturing.
  • Rubidium can very easily get ionized and hence it is used for ion engines, but it is still less efficient than that of Caesium.
  
Industrial Uses
Aerospace Industry, Ammunition Industry, Automobile Industry, Chemical Industry, Electrical Industry, Electronic Industry   
NA   
Medical Uses
Dentistry, Pharmaceutical Industry, Surgical Instruments Manufacturing   
NA   
Other Uses
Alloys, Jewellery, Sculptures, Statues   
Alloys, Research Purposes   
Biological Properties
  
  
Toxicity
Non Toxic   
Non Toxic   
Present in Human Body
Yes   
Yes   
In Blood
0.39 Blood/mg dm-3   
9
2.49 Blood/mg dm-3   
7
In Bone
27.00 p.p.m.   
11
5.00 p.p.m.   
13
Physical Properties
Melting Point
660.37 °C   
99+
38.89 °C   
99+
Boiling Point
2,467.00 °C   
99+
688.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Grayish White   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
2.75   
13
0.30   
24
Brinell Hardness
160.00 MPa   
99+
0.22 MPa   
99+
Vickers Hardness
160.00 MPa   
35
Not Available   
Speed of Sound
5,000.00 m/s   
10
1,300.00 m/s   
99+
Optical Properties
  
  
Reflectivity
71.00 %   
10
Not Available   
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
Al   
Rb   
Isotopes
  
  
Known Isotopes
11   
27
29   
10
Electronegativity
  
  
Pauling Electronegativity
1.61   
22
0.82   
99+
Sanderson Electronegativity
1.71   
13
0.31   
32
Allred Rochow Electronegativity
1.47   
14
0.89   
40
Mulliken-Jaffe Electronegativity
1.83   
8
0.69   
24
Allen Electronegativity
1.61   
20
0.71   
99+
Electropositivity
  
  
Pauling Electropositivity
2.39   
32
3.18   
3
Ionization Energies
  
  
1st Energy Level
577.50 kJ/mol   
99+
403.00 kJ/mol   
99+
2nd Energy Level
1,816.70 kJ/mol   
19
2,633.00 kJ/mol   
6
3rd Energy Level
2,744.80 kJ/mol   
38
3,860.00 kJ/mol   
11
4th Energy Level
11,577.00 kJ/mol   
3
5,080.00 kJ/mol   
18
5th Energy Level
14,842.00 kJ/mol   
2
6,850.00 kJ/mol   
19
6th Energy Level
18,379.00 kJ/mol   
2
8,140.00 kJ/mol   
20
7th Energy level
23,326.00 kJ/mol   
2
9,570.00 kJ/mol   
20
8th Energy Level
27,465.00 kJ/mol   
2
13,120.00 kJ/mol   
17
9th Energy Level
31,853.00 kJ/mol   
2
14,500.00 kJ/mol   
18
10th Energy Level
38,473.00 kJ/mol   
4
26,740.00 kJ/mol   
6
11th Energy Level
42,647.00 kJ/mol   
5
Not Available   
Electrochemical Equivalent
0.34 g/amp-hr   
99+
3.19 g/amp-hr   
14
Electron Work Function
4.28 eV   
19
2.16 eV   
99+
Other Chemical Properties
Chemical Stability, Ionization, Radioactive Isotopes   
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   
Atomic Properties
Atomic Number
13   
99+
37   
99+
Electron Configuration
[Ne] 3s2 3p1   
[Kr] 5s1   
Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Aluminium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
13   
99+
37   
99+
Number of Neutrons
14   
99+
48   
99+
Number of Electrons
13   
99+
37   
99+
Radius of an Atom
  
  
Atomic Radius
143.00 pm   
37
248.00 pm   
2
Covalent Radius
121.00 pm   
99+
220.00 pm   
4
Van der Waals Radius
184.00 pm   
34
303.00 pm   
3
Atomic Weight
26.98 amu   
99+
85.47 amu   
99+
Atomic Volume
10.00 cm3/mol   
99+
55.90 cm3/mol   
2
Adjacent Atomic Numbers
  
  
Previous Element
Magnesium
  
Gallium
  
Next Element
Potassium
  
Strontium
  
Valence Electron Potential
80.70 (-eV)   
17
9.47 (-eV)   
99+
Lattice Constant
404.95 pm   
22
558.50 pm   
10
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
2.70 g/cm3   
99+
1.53 g/cm3   
99+
Density When Liquid (at m.p.)
2.38 g/cm3   
99+
1.46 g/cm3   
99+
Tensile Strength
40.00 MPa   
19
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
18
Not Available   
Elasticity properties
  
  
Shear Modulus
26.00 GPa   
29
Not Available   
Bulk Modulus
76.00 GPa   
18
2.50 GPa   
99+
Young's Modulus
70.00 GPa   
28
2.40 GPa   
99+
Poisson Ratio
0.35   
9
Not Available   
Other Mechanical Properties
Ductile, Malleable   
Ductile   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
2.72   
99+
1.53   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Permeability
0.00 H/m   
4
Not Available   
Susceptibility
0.00   
3
Not Available   
Electrical Properties
  
  
Electrical Property
Conductor   
Conductor   
Resistivity
28.20 nΩ·m   
99+
128.00 nΩ·m   
26
Electrical Conductivity
0.38 106/cm Ω   
4
0.08 106/cm Ω   
24
Electron Affinity
42.50 kJ/mol   
26
46.90 kJ/mol   
24
Thermal Properties
Specific Heat
0.90 J/(kg K)   
5
0.36 J/(kg K)   
17
Molar Heat Capacity
24.20 J/mol·K   
99+
31.06 J/mol·K   
5
Thermal Conductivity
237.00 W/m·K   
4
58.20 W/m·K   
26
Critical Temperature
Not Available   
2,093.00 K   
4
Thermal Expansion
23.10 µm/(m·K)   
17
90.00 µm/(m·K)   
2
Enthalpy
  
  
Enthalpy of Vaporization
293.70 kJ/mol   
31
69.20 kJ/mol   
99+
Enthalpy of Fusion
10.67 kJ/mol   
35
2.19 kJ/mol   
99+
Enthalpy of Atomization
322.20 kJ/mol   
31
82.00 kJ/mol   
99+
Standard Molar Entropy
28.30 J/mol.K   
99+
76.80 J/mol.K   
5
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