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Uranium vs Rubidium


Rubidium vs Uranium


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  
13
229.00  
2

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
-  
Robert Bunsen and Gustav Kirchhoff  

Discovery
In 1789  
In 1861  

Abundance
  
  

Abundance In Universe
0.00 %  
30
0.00 %  
17

Abundance In Sun
0.00 %  
26
0.00 %  
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
0.00 %  
24
0.00 %  
8

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  
-  

Medical Uses
-  
-  

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
0.00 Blood/mg dm-3  
37
2.49 Blood/mg dm-3  
7

In Bone
1.20 p.p.m.  
19
5.00 p.p.m.  
13

Physical

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  
-  

Hardness
  
  

Mohs Hardness
6.00  
6
0.30  
26

Brinell Hardness
2,350.00 MPa  
2
0.22 MPa  
99+

Vickers Hardness
1,960.00 MPa  
6
0.22 MPa  
99+

Speed of Sound
3,155.00 m/s  
36
1,300.00 m/s  
99+

Optical Properties
  
  

Refractive Index
1.38  
40
1.54  
35

Reflectivity
80.00 %  
7
52.00 %  
29

Allotropes
No  
No  

α Allotropes
-  
-  

β Allotropes
-  
-  

γ Allotropes
-  
-  

Chemical

Chemical Formula
U  
Rb  

Isotopes
  
  

Known Isotopes
25  
14
29  
10

Electronegativity
  
  

Pauling Electronegativity
1.38  
29
0.82  
99+

Sanderson Electronegativity
1.38  
22
0.31  
99+

Allred Rochow Electronegativity
1.22  
27
0.89  
99+

Mulliken-Jaffe Electronegativity
1.38  
29
0.69  
99+

Allen Electronegativity
1.38  
36
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  
28

5th Energy Level
5,976.00 kJ/mol  
99+
6,850.00 kJ/mol  
31

6th Energy Level
5,976.00 kJ/mol  
99+
8,140.00 kJ/mol  
31

7th Energy level
5,970.00 kJ/mol  
99+
9,570.00 kJ/mol  
20

8th Energy Level
5,976.00 kJ/mol  
99+
13,120.00 kJ/mol  
17

9th Energy Level
5,976.00 kJ/mol  
99+
14,500.00 kJ/mol  
18

10th Energy Level
5,976.00 kJ/mol  
99+
26,740.00 kJ/mol  
6

11th Energy Level
5,976.00 kJ/mol  
99+
4,030.00 kJ/mol  
99+

12th Energy Level
5,970.00 kJ/mol  
99+
4,030.00 kJ/mol  
99+

13th Energy Level
5,970.00 kJ/mol  
99+
4,030.00 kJ/mol  
99+

14th Energy Level
5,970.00 kJ/mol  
34
4,030.00 kJ/mol  
99+

15th Energy Level
59,700.00 kJ/mol  
99+
40,300.00 kJ/mol  
99+

16th Energy Level
59,700.00 kJ/mol  
35
40,300.00 kJ/mol  
99+

17th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

18th Energy Level
5,976.00 kJ/mol  
99+
4,030.00 kJ/mol  
99+

19th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

20th Energy Level
597.00 kJ/mol  
99+
403.00 kJ/mol  
99+

21st Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

22nd Energy Level
597.00 kJ/mol  
99+
403.00 kJ/mol  
99+

23rd Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

24th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

25th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

26th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

27th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

28th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

29th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

30th Energy Level
597.60 kJ/mol  
99+
403.00 kJ/mol  
99+

Electrochemical Equivalent
1.48 g/amp-hr  
99+
3.19 g/amp-hr  
16

Electron Work Function
3.63 eV  
99+
2.16 eV  
99+

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Corrosion, Ionization, Radioactive Isotopes, Radioactivity  

Atomic

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  
14
48  
99+

Number of Electrons
92  
26
37  
99+

Radius of an Atom
  
  

Atomic Radius
156.00 pm  
31
248.00 pm  
3

Covalent Radius
196.00 pm  
14
220.00 pm  
4

Van der Waals Radius
186.00 pm  
40
303.00 pm  
4

Atomic Weight
238.03 amu  
21
85.47 amu  
99+

Atomic Volume
12.59 cm3/mol  
99+
55.90 cm3/mol  
3

Adjacent Atomic Numbers
  
  

Previous Element
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  
11

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

Lattice C/A Ratio
1.02  
99+
1.59  
28

Mechanical

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  
17
1.46 g/cm3  
99+

Tensile Strength
100.00 MPa  
28
30.00 MPa  
99+

Viscosity
0.00  
21
0.00  
23

Vapor Pressure
  
  

Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37

Vapor Pressure at 2000 K
0.01 (Pa)  
20
0.00 (Pa)  
35

Elasticity properties
  
  

Shear Modulus
111.00 GPa  
10
2.50 GPa  
99+

Bulk Modulus
100.00 GPa  
16
2.50 GPa  
99+

Young's Modulus
208.00 GPa  
11
2.40 GPa  
99+

Poisson Ratio
0.23  
30
0.37  
7

Other Mechanical Properties
Ductile, Malleable  
Ductile  

Magnetic

Magnetic Characteristics
  
  

Specific Gravity
18.80  
19
1.53  
99+

Magnetic Ordering
Paramagnetic  
Paramagnetic  

Permeability
0.00 H/m  
16
0.00 H/m  
11

Susceptibility
0.00  
24
0.00  
24

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  
99+
0.08 106/cm Ω  
29

Electron Affinity
50.60 kJ/mol  
25
46.90 kJ/mol  
29

Thermal

Specific Heat
0.12 J/(kg K)  
99+
0.36 J/(kg K)  
17

Molar Heat Capacity
27.67 J/mol·K  
18
31.06 J/mol·K  
7

Thermal Conductivity
27.50 W/m·K  
99+
58.20 W/m·K  
26

Critical Temperature
1,405.00 K  
99+
2,093.00 K  
18

Thermal Expansion
13.90 µm/(m·K)  
30
90.00 µm/(m·K)  
2

Enthalpy
  
  

Enthalpy of Vaporization
477.00 kJ/mol  
18
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  
18
82.00 kJ/mol  
99+

Standard Molar Entropy
50.20 J/mol.K  
99+
76.80 J/mol.K  
5

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