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Roentgenium vs Uranium

Roentgenium
Uranium
Uranium vs Roentgenium


Periodic Table
Symbol
Rg  
U  
Group Number
11  
7
0  
18
Period Number
7  
7  
Block
d block  
f block  
Element Family
-  
Actinide  
CAS Number
54386242  
1
7440611  
28
Space Group Name
-  
Cmcm  
Space Group Number
194.00  
7
63.00  
13
Facts
Interesting Facts
Roentgenium is a highly unstable synthetic element.  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Sources
Synthetically Produced  
Earth's crust, Mining, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
-  
Discovery
In 1994  
In 1789  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
30
Abundance In Sun
-  
0.00 %  
26
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
36
Abundance In Oceans
-  
0.00 %  
11
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
  • 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
-  
Ammunition Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
1.20 p.p.m.  
19
Physical
Melting Point
-  
1,132.00 °C  
39
Boiling Point
2,800.00 °C  
38
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Silvery Gray  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
-  
6.00  
6
Brinell Hardness
700.00 MPa  
17
2,350.00 MPa  
2
Vickers Hardness
450.00 MPa  
38
1,960.00 MPa  
6
Speed of Sound
3,430.00 m/s  
32
3,155.00 m/s  
36
Optical Properties
  
  
Refractive Index
1.30  
99+
1.38  
40
Reflectivity
64.00 %  
19
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rg  
U  
Isotopes
  
  
Known Isotopes
1  
34
25  
14
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
1.38  
29
Sanderson Electronegativity
1.90  
13
1.38  
22
Allred Rochow Electronegativity
1.30  
25
1.22  
27
Mulliken-Jaffe Electronegativity
0.90  
99+
1.38  
29
Allen Electronegativity
0.80  
99+
1.38  
36
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
2.62  
26
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol  
3
597.60 kJ/mol  
99+
2nd Energy Level
2,074.40 kJ/mol  
10
1,420.00 kJ/mol  
99+
3rd Energy Level
3,077.90 kJ/mol  
24
1,900.00 kJ/mol  
99+
4th Energy Level
4,052.40 kJ/mol  
99+
3,145.00 kJ/mol  
99+
5th Energy Level
5,306.70 kJ/mol  
99+
5,976.00 kJ/mol  
99+
6th Energy Level
11,100.00 kJ/mol  
10
5,976.00 kJ/mol  
99+
7th Energy level
5,800.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
8th Energy Level
5,800.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
9th Energy Level
5,650.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
11th Energy Level
8,300.00 kJ/mol  
24
5,976.00 kJ/mol  
99+
12th Energy Level
8,300.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
13th Energy Level
8,700.00 kJ/mol  
16
5,970.00 kJ/mol  
99+
14th Energy Level
8,300.00 kJ/mol  
16
5,970.00 kJ/mol  
34
15th Energy Level
87,000.00 kJ/mol  
9
59,700.00 kJ/mol  
99+
16th Energy Level
83,000.00 kJ/mol  
11
59,700.00 kJ/mol  
35
17th Energy Level
830.80 kJ/mol  
30
597.60 kJ/mol  
99+
18th Energy Level
8,300.00 kJ/mol  
19
5,976.00 kJ/mol  
99+
19th Energy Level
580.00 kJ/mol  
99+
597.60 kJ/mol  
99+
20th Energy Level
580.00 kJ/mol  
99+
597.00 kJ/mol  
99+
21st Energy Level
5,800.00 kJ/mol  
21
597.60 kJ/mol  
99+
22nd Energy Level
580.00 kJ/mol  
99+
597.00 kJ/mol  
99+
23rd Energy Level
5,800.00 kJ/mol  
21
597.60 kJ/mol  
99+
24th Energy Level
538.70 kJ/mol  
99+
597.60 kJ/mol  
99+
25th Energy Level
0.00 kJ/mol  
99+
597.60 kJ/mol  
99+
26th Energy Level
580.00 kJ/mol  
99+
597.60 kJ/mol  
99+
27th Energy Level
580.00 kJ/mol  
99+
597.60 kJ/mol  
99+
28th Energy Level
880.00 kJ/mol  
8
597.60 kJ/mol  
99+
29th Energy Level
580.00 kJ/mol  
99+
597.60 kJ/mol  
99+
30th Energy Level
0.00 kJ/mol  
99+
597.60 kJ/mol  
99+
Electrochemical Equivalent
3.10 g/amp-hr  
18
1.48 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
3.63 eV  
99+
Other Chemical Properties
-  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
111  
7
92  
26
Electron Configuration
[Rn] 5f14 6d9 7s2  
[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
111  
7
92  
26
Number of Neutrons
161  
4
146  
14
Number of Electrons
111  
7
92  
26
Radius of an Atom
  
  
Atomic Radius
200.00 pm  
7
156.00 pm  
31
Covalent Radius
126.00 pm  
99+
196.00 pm  
14
Van der Waals Radius
280.00 pm  
6
186.00 pm  
40
Atomic Weight
281.00 amu  
6
238.03 amu  
21
Atomic Volume
28.70 cm3/mol  
12
12.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Darmstadtium
  
Protactinium
  
Next Element
Copernicium
  
Neptunium
  
Valence Electron Potential
11.90 (-eV)  
99+
170.00 (-eV)  
4
Lattice Constant
0.00 pm  
99+
295.08 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.90  
1
1.02  
99+
Mechanical
Density
  
  
Density At Room Temperature
28.70 g/cm3  
6
19.10 g/cm3  
17
Density When Liquid (at m.p.)
28.70 g/cm3  
7
17.30 g/cm3  
17
Tensile Strength
65.00 MPa  
33
100.00 MPa  
28
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
111.00 GPa  
10
Bulk Modulus
0.00 GPa  
99+
100.00 GPa  
16
Young's Modulus
12.70 GPa  
99+
208.00 GPa  
11
Poisson Ratio
0.30  
14
0.23  
30
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
28.70  
8
18.80  
19
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
Poor Conductor  
Resistivity
0.20 nΩ·m  
99+
0.28 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.04 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
50.60 kJ/mol  
25
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.12 J/(kg K)  
99+
Molar Heat Capacity
23.70 J/mol·K  
99+
27.67 J/mol·K  
18
Thermal Conductivity
0.10 W/m·K  
99+
27.50 W/m·K  
99+
Critical Temperature
1,100.00 K  
99+
1,405.00 K  
99+
Thermal Expansion
12.60 µm/(m·K)  
40
13.90 µm/(m·K)  
30
Enthalpy
  
  
Enthalpy of Vaporization
580.00 kJ/mol  
12
477.00 kJ/mol  
18
Enthalpy of Fusion
-  
15.48 kJ/mol  
19
Enthalpy of Atomization
580.00 kJ/mol  
14
489.50 kJ/mol  
18
Standard Molar Entropy
57.00 J/mol.K  
30
50.20 J/mol.K  
99+
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