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Uranium Rubidium Comparison

Uranium
Rubidium
Rubidium Uranium comparison


Periodic Table
Symbol
U   
Rb   
Group Number
0   
18
1   
17
Period Number
7   
5   
Block
f block   
s block   
Element Family
Actinide   
Alkali   
CAS Number
7440611   
28
7440177   
99+
Space Group Name
Cmcm   
Im_ 3m   
Space Group Number
63.00   
10
229.00   
1
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
  • Rubidium metal is 16th most common element found in the earth crust.
  • Rubidium metal also found in minerals as well as seawater.
  
Sources
Earth's crust, Mining, Ores of Minerals   
Obtained from Lithium Production.   
History
  
  
Who Discovered
Not Available   
Robert Bunsen and Gustav Kirchhoff   
Discovery
In 1789   
In 1861   
Abundance
  
  
Abundance In Universe
2 * 10-8 %   
29
1 * 10-6 %   
16
Abundance In Sun
~0.0000001 %   
26
~0.000003 %   
17
Abundance In Meteorites
0.00 %   
99+
0.00 %   
19
Abundance In Earth's Crust
0.00 %   
36
0.01 %   
18
Abundance In Oceans
0.00 %   
11
0.00 %   
7
Abundance In Humans
Not Available   
0.00 %   
7
Uses
Uses & Benefits
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
  • 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
Ammunition Industry, Chemical Industry   
NA   
Medical Uses
NA   
NA   
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   
Alloys, Research Purposes   
Biological Properties
  
  
Toxicity
Toxic   
Non Toxic   
Present in Human Body
No   
Yes   
In Blood
Not Available   
2.49 Blood/mg dm-3   
7
In Bone
Not Available   
5.00 p.p.m.   
13
Physical Properties
Melting Point
1,132.00 °C   
39
38.89 °C   
99+
Boiling Point
3,818.00 °C   
16
688.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Grayish White   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
6.00   
6
0.30   
24
Brinell Hardness
2,350.00 MPa   
2
0.22 MPa   
99+
Vickers Hardness
1,960.00 MPa   
2
Not Available   
Speed of Sound
3,155.00 m/s   
25
1,300.00 m/s   
99+
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
U   
Rb   
Isotopes
  
  
Known Isotopes
25   
14
29   
10
Electronegativity
  
  
Pauling Electronegativity
1.38   
28
0.82   
99+
Sanderson Electronegativity
Not Available   
0.31   
32
Allred Rochow Electronegativity
1.22   
26
0.89   
40
Mulliken-Jaffe Electronegativity
Not Available   
0.69   
24
Allen Electronegativity
Not Available   
0.71   
99+
Electropositivity
  
  
Pauling Electropositivity
2.62   
26
3.18   
3
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol   
99+
403.00 kJ/mol   
99+
2nd Energy Level
1,420.00 kJ/mol   
99+
2,633.00 kJ/mol   
6
3rd Energy Level
1,900.00 kJ/mol   
99+
3,860.00 kJ/mol   
11
4th Energy Level
3,145.00 kJ/mol   
99+
5,080.00 kJ/mol   
18
5th Energy Level
Not Available   
6,850.00 kJ/mol   
19
6th Energy Level
Not Available   
8,140.00 kJ/mol   
20
7th Energy level
Not Available   
9,570.00 kJ/mol   
20
8th Energy Level
Not Available   
13,120.00 kJ/mol   
17
9th Energy Level
Not Available   
14,500.00 kJ/mol   
18
10th Energy Level
Not Available   
26,740.00 kJ/mol   
6
Electrochemical Equivalent
1.48 g/amp-hr   
99+
3.19 g/amp-hr   
14
Electron Work Function
3.63 eV   
30
2.16 eV   
99+
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Corrosion, Ionization, Radioactive Isotopes, Radioactivity   
Atomic Properties
Atomic Number
92   
26
37   
99+
Electron Configuration
[Rn] 5f3 6d1 7s2   
[Kr] 5s1   
Crystal Structure
Orthorhombic (ORTH)   
Body Centered Cubic (BCC)   
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
92   
26
37   
99+
Number of Neutrons
146   
13
48   
99+
Number of Electrons
92   
26
37   
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
248.00 pm   
2
Covalent Radius
196.00 pm   
14
220.00 pm   
4
Van der Waals Radius
186.00 pm   
33
303.00 pm   
3
Atomic Weight
238.03 amu   
21
85.47 amu   
99+
Atomic Volume
12.59 cm3/mol   
40
55.90 cm3/mol   
2
Adjacent Atomic Numbers
  
  
Previous Element
Protactinium
  
Gallium
  
Next Element
Neptunium
  
Strontium
  
Valence Electron Potential
170.00 (-eV)   
4
9.47 (-eV)   
99+
Lattice Constant
295.08 pm   
99+
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
19.10 g/cm3   
17
1.53 g/cm3   
99+
Density When Liquid (at m.p.)
17.30 g/cm3   
7
1.46 g/cm3   
99+
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.01 (Pa)   
20
Not Available   
Elasticity properties
  
  
Shear Modulus
111.00 GPa   
10
Not Available   
Bulk Modulus
100.00 GPa   
16
2.50 GPa   
99+
Young's Modulus
208.00 GPa   
10
2.40 GPa   
99+
Poisson Ratio
0.23   
30
Not Available   
Other Mechanical Properties
Ductile, Malleable   
Ductile   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
18.80   
10
1.53   
99+
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Poor Conductor   
Conductor   
Resistivity
0.28 nΩ·m   
99+
128.00 nΩ·m   
26
Electrical Conductivity
0.04 106/cm Ω   
37
0.08 106/cm Ω   
24
Electron Affinity
Not Available   
46.90 kJ/mol   
24
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.36 J/(kg K)   
17
Molar Heat Capacity
27.67 J/mol·K   
15
31.06 J/mol·K   
5
Thermal Conductivity
27.50 W/m·K   
40
58.20 W/m·K   
26
Critical Temperature
Not Available   
2,093.00 K   
4
Thermal Expansion
13.90 µm/(m·K)   
27
90.00 µm/(m·K)   
2
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol   
13
69.20 kJ/mol   
99+
Enthalpy of Fusion
15.48 kJ/mol   
19
2.19 kJ/mol   
99+
Enthalpy of Atomization
489.50 kJ/mol   
14
82.00 kJ/mol   
99+
Standard Molar Entropy
50.20 J/mol.K   
31
76.80 J/mol.K   
5
Summary >>
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