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Europium vs Uranium


Uranium vs Europium


Periodic Table

Symbol
Eu   
U   

Group Number
Not Available   
0   
18

Period Number
6   
7   

Block
f block   
f block   

Element Family
Lanthanide   
Actinide   

CAS Number
7440531   
34
7440611   
28

Space Group Name
Im_ 3m   
Cmcm   

Space Group Number
229.00   
1
63.00   
10

Facts

Interesting Facts
Not Available   
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  

Sources
Found in Minerals, Mining, Ores of Minerals   
Earth's crust, Mining, Ores of Minerals   

History
  
  

Who Discovered
Eugène-Anatole Demarçay   
Not Available   

Discovery
In 1896   
In 1789   

Abundance
  
  

Abundance In Universe
5 * 10-8 %   
27
2 * 10-8 %   
29

Abundance In Sun
~0.00000005 %   
27
~0.0000001 %   
26

Abundance In Meteorites
0.00 %   
99+
0.00 %   
99+

Abundance In Earth's Crust
0.00 %   
36
0.00 %   
36

Abundance In Oceans
0.00 %   
99+
0.00 %   
11

Uses

Uses & Benefits
  • Europium metals main uses is in the printing of euro banknotes. These notes glow red under UV light.
  • It is used in low energy light bulbs.
  
  • 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.
  

Industrial Uses
Chemical Industry   
Ammunition Industry, Chemical Industry   

Medical Uses
NA   
NA   

Other Uses
Alloys   
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   

Biological Properties
  
  

Toxicity
Non Toxic   
Toxic   

Present in Human Body
Yes   
No   

Physical Properties

Melting Point
822.00 °C   
99+
1,132.00 °C   
39

Boiling Point
1,597.00 °C   
99+
3,818.00 °C   
16

Appearance
  
  

Physical State
Solid   
Solid   

Color
Silvery White   
Silvery Gray   

Luster
Lustrous   
Metallic   

Hardness
  
  

Mohs Hardness
Not Available   
6.00   
6

Brinell Hardness
Not Available   
2,350.00 MPa   
2

Vickers Hardness
167.00 MPa   
34
1,960.00 MPa   
2

Speed of Sound
Not Available   
3,155.00 m/s   
25

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
Eu   
U   

Isotopes
  
  

Known Isotopes
31   
8
25   
14

Electronegativity
  
  

Pauling Electronegativity
1.20   
39
1.38   
28

Sanderson Electronegativity
1.01   
22
Not Available   

Allred Rochow Electronegativity
Not Available   
1.22   
26

Electropositivity
  
  

Pauling Electropositivity
Not Available   
2.62   
26

Ionization Energies
  
  

1st Energy Level
547.10 kJ/mol   
99+
597.60 kJ/mol   
99+

2nd Energy Level
1,085.00 kJ/mol   
99+
1,420.00 kJ/mol   
99+

3rd Energy Level
2,404.00 kJ/mol   
99+
1,900.00 kJ/mol   
99+

4th Energy Level
4,120.00 kJ/mol   
33
3,145.00 kJ/mol   
99+

Electrochemical Equivalent
1.89 g/amp-hr   
33
1.48 g/amp-hr   
99+

Electron Work Function
2.50 eV   
99+
3.63 eV   
30

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

Atomic Properties

Atomic Number
63   
99+
92   
26

Electron Configuration
[Xe] 4f7 6s2   
[Rn] 5f3 6d1 7s2   

Crystal Structure
Body Centered Cubic (BCC)   
Orthorhombic (ORTH)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
ORTH-Crystal-Structure-of-Uranium.jpg#100   

Atom
  
  

Number of Protons
63   
99+
92   
26

Number of Neutrons
89   
38
146   
13

Number of Electrons
63   
99+
92   
26

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
156.00 pm   
29

Covalent Radius
198.00 pm   
13
196.00 pm   
14

Van der Waals Radius
233.00 pm   
18
186.00 pm   
33

Atomic Weight
151.96 amu   
99+
238.03 amu   
21

Atomic Volume
28.90 cm3/mol   
8
12.59 cm3/mol   
40

Adjacent Atomic Numbers
  
  

Previous Element
Samarium
  

Next Element
Gadolinium
  
Neptunium
  

Valence Electron Potential
45.60 (-eV)   
35
170.00 (-eV)   
4

Lattice Constant
458.10 pm   
17
295.08 pm   
99+

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
5.26 g/cm3   
99+
19.10 g/cm3   
17

Density When Liquid (at m.p.)
5.13 g/cm3   
99+
17.30 g/cm3   
7

Tensile Strength
120.00 MPa   
15
Not Available   

Viscosity
Not Available   
Not Available   

Vapor Pressure
  
  

Vapor Pressure at 1000 K
19.40 (Pa)   
4
Not Available   

Vapor Pressure at 2000 K
Not Available   
0.01 (Pa)   
20

Elasticity properties
  
  

Shear Modulus
7.90 GPa   
99+
111.00 GPa   
10

Bulk Modulus
8.30 GPa   
99+
100.00 GPa   
16

Young's Modulus
18.20 GPa   
99+
208.00 GPa   
10

Poisson Ratio
0.15   
34
0.23   
30

Other Mechanical Properties
Ductile   
Ductile, Malleable   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
5.24   
99+
18.80   
10

Magnetic Ordering
Paramagnetic   
Paramagnetic   

Electrical Properties
  
  

Electrical Property
Conductor   
Poor Conductor   

Resistivity
0.90 nΩ·m   
99+
0.28 nΩ·m   
99+

Electrical Conductivity
0.01 106/cm Ω   
99+
0.04 106/cm Ω   
37

Electron Affinity
50.00 kJ/mol   
21
Not Available   

Thermal Properties

Specific Heat
0.18 J/(kg K)   
33
0.12 J/(kg K)   
40

Molar Heat Capacity
27.66 J/mol·K   
16
27.67 J/mol·K   
15

Thermal Conductivity
13.90 W/m·K   
99+
27.50 W/m·K   
40

Critical Temperature
Not Available   
Not Available   

Thermal Expansion
35.00 µm/(m·K)   
8
13.90 µm/(m·K)   
27

Enthalpy
  
  

Enthalpy of Vaporization
143.50 kJ/mol   
99+
477.00 kJ/mol   
13

Enthalpy of Fusion
9.21 kJ/mol   
37
15.48 kJ/mol   
19

Enthalpy of Atomization
180.00 kJ/mol   
99+
489.50 kJ/mol   
14

Standard Molar Entropy
77.80 J/mol.K   
4
50.20 J/mol.K   
31

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