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Roentgenium vs Vanadium

Roentgenium
Vanadium
Vanadium vs Roentgenium


Periodic Table
Symbol
Rg  
V  
Group Number
11  
7
5  
13
Period Number
7  
4  
Block
d block  
d block  
Element Family
-  
Transition Metal  
CAS Number
54386242  
1
7440622  
27
Space Group Name
-  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
Roentgenium is a highly unstable synthetic element.  
  • Vanadium is a highly reactive metal, hence it is not found free in nature.
  • Vanadium can be found in almost 65 different types of minerals.
  
Sources
Synthetically Produced  
Found As a By-product, Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Andrés Manuel del Río  
Discovery
In 1994  
In 1801  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
11
Abundance In Sun
-  
0.00 %  
13
Abundance In Meteorites
-  
0.01 %  
14
Abundance In Earth's Crust
-  
0.02 %  
12
Abundance In Oceans
-  
0.00 %  
14
Abundance In Humans
-  
0.00 %  
19
Uses
Uses & Benefits
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
  • Its ally with steel is used very tough and hence it is used in armor plates, axles, piston rods, tools and crankshafts.
  • Its oxide is used as pigments for glass and ceramics.
  
Industrial Uses
-  
Aerospace Industry, Automobile Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
-  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
39
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
36
Physical
Melting Point
-  
1,890.00 °C  
13
Boiling Point
2,800.00 °C  
38
3,380.00 °C  
21
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Blue-Silver Grey  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
-  
6.70  
4
Brinell Hardness
700.00 MPa  
17
600.00 MPa  
24
Vickers Hardness
450.00 MPa  
38
628.00 MPa  
25
Speed of Sound
3,430.00 m/s  
32
4,560.00 m/s  
22
Optical Properties
  
  
Refractive Index
1.30  
99+
2.05  
13
Reflectivity
64.00 %  
19
61.00 %  
22
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rg  
V  
Isotopes
  
  
Known Isotopes
1  
34
22  
17
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
1.63  
21
Sanderson Electronegativity
1.90  
13
1.39  
21
Allred Rochow Electronegativity
1.30  
25
1.45  
17
Mulliken-Jaffe Electronegativity
0.90  
99+
1.63  
21
Allen Electronegativity
0.80  
99+
1.53  
29
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
2.37  
34
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol  
3
650.90 kJ/mol  
99+
2nd Energy Level
2,074.40 kJ/mol  
10
1,414.00 kJ/mol  
99+
3rd Energy Level
3,077.90 kJ/mol  
24
2,830.00 kJ/mol  
36
4th Energy Level
4,052.40 kJ/mol  
99+
4,507.00 kJ/mol  
35
5th Energy Level
5,306.70 kJ/mol  
99+
6,298.70 kJ/mol  
38
6th Energy Level
11,100.00 kJ/mol  
10
12,363.00 kJ/mol  
6
7th Energy level
5,800.00 kJ/mol  
99+
14,530.00 kJ/mol  
5
8th Energy Level
5,800.00 kJ/mol  
99+
16,730.00 kJ/mol  
7
9th Energy Level
5,650.00 kJ/mol  
99+
19,860.00 kJ/mol  
7
10th Energy Level
5,800.00 kJ/mol  
99+
22,240.00 kJ/mol  
12
11th Energy Level
8,300.00 kJ/mol  
24
24,670.00 kJ/mol  
15
12th Energy Level
8,300.00 kJ/mol  
99+
29,730.00 kJ/mol  
34
13th Energy Level
8,700.00 kJ/mol  
16
32,446.00 kJ/mol  
12
14th Energy Level
8,300.00 kJ/mol  
16
86,450.00 kJ/mol  
1
15th Energy Level
87,000.00 kJ/mol  
9
94,170.00 kJ/mol  
3
16th Energy Level
83,000.00 kJ/mol  
11
102,300.00 kJ/mol  
3
17th Energy Level
830.80 kJ/mol  
30
112,700.00 kJ/mol  
4
18th Energy Level
8,300.00 kJ/mol  
19
121,600.00 kJ/mol  
5
19th Energy Level
580.00 kJ/mol  
99+
130,700.00 kJ/mol  
6
20th Energy Level
580.00 kJ/mol  
99+
143,400.00 kJ/mol  
8
21st Energy Level
5,800.00 kJ/mol  
21
151,440.00 kJ/mol  
8
22nd Energy Level
580.00 kJ/mol  
99+
650.00 kJ/mol  
32
23rd Energy Level
5,800.00 kJ/mol  
21
650.90 kJ/mol  
99+
24th Energy Level
538.70 kJ/mol  
99+
650.90 kJ/mol  
34
25th Energy Level
0.00 kJ/mol  
99+
650.90 kJ/mol  
36
26th Energy Level
580.00 kJ/mol  
99+
650.90 kJ/mol  
35
27th Energy Level
580.00 kJ/mol  
99+
650.90 kJ/mol  
36
28th Energy Level
880.00 kJ/mol  
8
650.90 kJ/mol  
99+
29th Energy Level
580.00 kJ/mol  
99+
650.90 kJ/mol  
99+
30th Energy Level
0.00 kJ/mol  
99+
650.90 kJ/mol  
38
Electrochemical Equivalent
3.10 g/amp-hr  
18
0.38 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.30 eV  
25
Other Chemical Properties
-  
Anti Corrosion, Ionization, Radioactive Isotopes  
Atomic
Atomic Number
111  
7
23  
99+
Electron Configuration
[Rn] 5f14 6d9 7s2  
[Ar] 3d3 4s2  
Crystal Structure
Body Centered Cubic (BCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
111  
7
23  
99+
Number of Neutrons
161  
4
28  
99+
Number of Electrons
111  
7
23  
99+
Radius of an Atom
  
  
Atomic Radius
200.00 pm  
7
134.00 pm  
99+
Covalent Radius
126.00 pm  
99+
153.00 pm  
35
Van der Waals Radius
280.00 pm  
6
200.00 pm  
35
Atomic Weight
281.00 amu  
6
50.94 amu  
99+
Atomic Volume
28.70 cm3/mol  
12
8.78 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Darmstadtium
  
Titanium
  
Next Element
Copernicium
  
Chromium
  
Valence Electron Potential
11.90 (-eV)  
99+
120.00 (-eV)  
6
Lattice Constant
0.00 pm  
99+
303.00 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.90  
1
1.70  
9
Mechanical
Density
  
  
Density At Room Temperature
28.70 g/cm3  
6
6.00 g/cm3  
99+
Density When Liquid (at m.p.)
28.70 g/cm3  
7
5.50 g/cm3  
99+
Tensile Strength
65.00 MPa  
33
800.00 MPa  
6
Viscosity
0.00  
25
0.00  
11
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.23 (Pa)  
16
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
47.00 GPa  
16
Bulk Modulus
0.00 GPa  
99+
160.00 GPa  
11
Young's Modulus
12.70 GPa  
99+
128.00 GPa  
17
Poisson Ratio
0.30  
14
0.37  
7
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
28.70  
8
5.96  
99+
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
15
Susceptibility
0.00  
24
0.00  
8
Electrical Properties
  
  
Electrical Property
-  
Superconductor  
Resistivity
0.20 nΩ·m  
99+
197.00 nΩ·m  
19
Electrical Conductivity
0.00 106/cm Ω  
99+
0.05 106/cm Ω  
40
Electron Affinity
50.00 kJ/mol  
26
50.60 kJ/mol  
25
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.49 J/(kg K)  
10
Molar Heat Capacity
23.70 J/mol·K  
99+
24.89 J/mol·K  
99+
Thermal Conductivity
0.10 W/m·K  
99+
30.70 W/m·K  
40
Critical Temperature
1,100.00 K  
99+
2,183.00 K  
15
Thermal Expansion
12.60 µm/(m·K)  
40
8.40 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
580.00 kJ/mol  
12
458.60 kJ/mol  
19
Enthalpy of Fusion
-  
17.57 kJ/mol  
14
Enthalpy of Atomization
580.00 kJ/mol  
14
514.60 kJ/mol  
17
Standard Molar Entropy
57.00 J/mol.K  
30
28.90 J/mol.K  
99+
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