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Uranium vs Roentgenium

Uranium
Roentgenium
Roentgenium vs Uranium


Periodic Table
Symbol
U  
Rg  
Group Number
0  
18
11  
7
Period Number
7  
7  
Block
f block  
d block  
Element Family
Actinide  
-  
CAS Number
7440611  
28
54386242  
1
Space Group Name
Cmcm  
-  
Space Group Number
63.00  
13
194.00  
7
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Roentgenium is a highly unstable synthetic element.  
Sources
Earth's crust, Mining, Ores of Minerals  
Synthetically Produced  
History
  
  
Who Discovered
-  
Gesellschaft für Schwerionenforschung  
Discovery
In 1789  
In 1994  
Abundance
  
  
Abundance In Universe
0.00 %  
30
0.00 %  
40
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
  • 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.
  
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
Industrial Uses
Ammunition Industry, Chemical Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Research Purposes  
Biological Properties
  
  
Toxicity
Toxic  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
40
In Bone
1.20 p.p.m.  
19
0.00 p.p.m.  
99+
Physical
Melting Point
1,132.00 °C  
39
-  
Boiling Point
3,818.00 °C  
16
2,800.00 °C  
38
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery Gray  
Silver  
Luster
Metallic  
Unknown Luster  
Hardness
  
  
Mohs Hardness
6.00  
6
-  
Brinell Hardness
2,350.00 MPa  
2
700.00 MPa  
17
Vickers Hardness
1,960.00 MPa  
6
450.00 MPa  
38
Speed of Sound
3,155.00 m/s  
36
3,430.00 m/s  
32
Optical Properties
  
  
Refractive Index
1.38  
40
1.30  
99+
Reflectivity
80.00 %  
7
64.00 %  
19
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
U  
Rg  
Isotopes
  
  
Known Isotopes
25  
14
1  
34
Electronegativity
  
  
Pauling Electronegativity
1.38  
29
0.00  
99+
Sanderson Electronegativity
1.38  
22
1.90  
13
Allred Rochow Electronegativity
1.22  
27
1.30  
25
Mulliken-Jaffe Electronegativity
1.38  
29
0.90  
99+
Allen Electronegativity
1.38  
36
0.80  
99+
Electropositivity
  
  
Pauling Electropositivity
2.62  
26
2.20  
39
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol  
99+
1,022.70 kJ/mol  
3
2nd Energy Level
1,420.00 kJ/mol  
99+
2,074.40 kJ/mol  
10
3rd Energy Level
1,900.00 kJ/mol  
99+
3,077.90 kJ/mol  
24
4th Energy Level
3,145.00 kJ/mol  
99+
4,052.40 kJ/mol  
99+
5th Energy Level
5,976.00 kJ/mol  
99+
5,306.70 kJ/mol  
99+
6th Energy Level
5,976.00 kJ/mol  
99+
11,100.00 kJ/mol  
10
7th Energy level
5,970.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
8th Energy Level
5,976.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
9th Energy Level
5,976.00 kJ/mol  
99+
5,650.00 kJ/mol  
99+
10th Energy Level
5,976.00 kJ/mol  
99+
5,800.00 kJ/mol  
99+
11th Energy Level
5,976.00 kJ/mol  
99+
8,300.00 kJ/mol  
24
12th Energy Level
5,970.00 kJ/mol  
99+
8,300.00 kJ/mol  
99+
13th Energy Level
5,970.00 kJ/mol  
99+
8,700.00 kJ/mol  
16
14th Energy Level
5,970.00 kJ/mol  
34
8,300.00 kJ/mol  
16
15th Energy Level
59,700.00 kJ/mol  
99+
87,000.00 kJ/mol  
9
16th Energy Level
59,700.00 kJ/mol  
35
83,000.00 kJ/mol  
11
17th Energy Level
597.60 kJ/mol  
99+
830.80 kJ/mol  
30
18th Energy Level
5,976.00 kJ/mol  
99+
8,300.00 kJ/mol  
19
19th Energy Level
597.60 kJ/mol  
99+
580.00 kJ/mol  
99+
20th Energy Level
597.00 kJ/mol  
99+
580.00 kJ/mol  
99+
21st Energy Level
597.60 kJ/mol  
99+
5,800.00 kJ/mol  
21
22nd Energy Level
597.00 kJ/mol  
99+
580.00 kJ/mol  
99+
23rd Energy Level
597.60 kJ/mol  
99+
5,800.00 kJ/mol  
21
24th Energy Level
597.60 kJ/mol  
99+
538.70 kJ/mol  
99+
25th Energy Level
597.60 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
597.60 kJ/mol  
99+
580.00 kJ/mol  
99+
27th Energy Level
597.60 kJ/mol  
99+
580.00 kJ/mol  
99+
28th Energy Level
597.60 kJ/mol  
99+
880.00 kJ/mol  
8
29th Energy Level
597.60 kJ/mol  
99+
580.00 kJ/mol  
99+
30th Energy Level
597.60 kJ/mol  
99+
0.00 kJ/mol  
99+
Electrochemical Equivalent
1.48 g/amp-hr  
99+
3.10 g/amp-hr  
18
Electron Work Function
3.63 eV  
99+
4.90 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
-  
Atomic
Atomic Number
92  
26
111  
7
Electron Configuration
[Rn] 5f3 6d1 7s2  
[Rn] 5f14 6d9 7s2  
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
111  
7
Number of Neutrons
146  
14
161  
4
Number of Electrons
92  
26
111  
7
Radius of an Atom
  
  
Atomic Radius
156.00 pm  
31
200.00 pm  
7
Covalent Radius
196.00 pm  
14
126.00 pm  
99+
Van der Waals Radius
186.00 pm  
40
280.00 pm  
6
Atomic Weight
238.03 amu  
21
281.00 amu  
6
Atomic Volume
12.59 cm3/mol  
99+
28.70 cm3/mol  
12
Adjacent Atomic Numbers
  
  
Previous Element
Protactinium
  
Darmstadtium
  
Next Element
Neptunium
  
Copernicium
  
Valence Electron Potential
170.00 (-eV)  
4
11.90 (-eV)  
99+
Lattice Constant
295.08 pm  
99+
0.00 pm  
99+
Lattice Angles
π/2, π/2, π/2  
-  
Lattice C/A Ratio
1.02  
99+
1.90  
1
Mechanical
Density
  
  
Density At Room Temperature
19.10 g/cm3  
17
28.70 g/cm3  
6
Density When Liquid (at m.p.)
17.30 g/cm3  
17
28.70 g/cm3  
7
Tensile Strength
100.00 MPa  
28
65.00 MPa  
33
Viscosity
0.00  
21
0.00  
25
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)  
99+
Elasticity properties
  
  
Shear Modulus
111.00 GPa  
10
26.00 GPa  
36
Bulk Modulus
100.00 GPa  
16
0.00 GPa  
99+
Young's Modulus
208.00 GPa  
11
12.70 GPa  
99+
Poisson Ratio
0.23  
30
0.30  
14
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
18.80  
19
28.70  
8
Magnetic Ordering
Paramagnetic  
-  
Permeability
0.00 H/m  
16
0.00 H/m  
12
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
Poor Conductor  
-  
Resistivity
0.28 nΩ·m  
99+
0.20 nΩ·m  
99+
Electrical Conductivity
0.04 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
50.60 kJ/mol  
25
50.00 kJ/mol  
26
Thermal
Specific Heat
0.12 J/(kg K)  
99+
0.13 J/(kg K)  
40
Molar Heat Capacity
27.67 J/mol·K  
18
23.70 J/mol·K  
99+
Thermal Conductivity
27.50 W/m·K  
99+
0.10 W/m·K  
99+
Critical Temperature
1,405.00 K  
99+
1,100.00 K  
99+
Thermal Expansion
13.90 µm/(m·K)  
30
12.60 µm/(m·K)  
40
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol  
18
580.00 kJ/mol  
12
Enthalpy of Fusion
15.48 kJ/mol  
19
-  
Enthalpy of Atomization
489.50 kJ/mol  
18
580.00 kJ/mol  
14
Standard Molar Entropy
50.20 J/mol.K  
99+
57.00 J/mol.K  
30
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