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Roentgenium vs Copernicium

Roentgenium
Copernicium
Copernicium vs Roentgenium


Periodic Table
Symbol
Rg  
Cn  
Group Number
11  
7
12  
6
Period Number
7  
7  
Block
d block  
d block  
Element Family
-  
Transition Metal  
CAS Number
54386242  
1
54084263  
7
Space Group Name
-  
-  
Space Group Number
194.00  
7
187.00  
8
Facts
Interesting Facts
Roentgenium is a highly unstable synthetic element.  
Copernicium was first synthesized in 1996 by a German research team.  
Sources
Synthetically Produced  
Synthetically Produced  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Gesellschaft für Schwerionenforschung  
Discovery
In 1994  
In 1996  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
39
Abundance In Sun
-  
-  
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
  • Currently known uses of Copernicium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
Research Purposes  
Research Purposes  
Biological Properties
  
  
Toxicity
-  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
-  
-  
Boiling Point
2,800.00 °C  
38
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
-  
Luster
Unknown Luster  
Unknown Luster  
Hardness
  
  
Mohs Hardness
-  
4.00  
11
Brinell Hardness
700.00 MPa  
17
240.00 MPa  
99+
Vickers Hardness
450.00 MPa  
38
3,570.00 MPa  
2
Speed of Sound
3,430.00 m/s  
32
3,570.00 m/s  
30
Optical Properties
  
  
Refractive Index
1.30  
99+
1.90  
18
Reflectivity
64.00 %  
19
45.00 %  
32
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rg  
Cn  
Isotopes
  
  
Known Isotopes
1  
34
1  
34
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
1.90  
12
Sanderson Electronegativity
1.90  
13
1.30  
25
Allred Rochow Electronegativity
1.30  
25
1.90  
1
Mulliken-Jaffe Electronegativity
0.90  
99+
1.90  
13
Allen Electronegativity
0.80  
99+
1.90  
8
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
2.00  
99+
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol  
3
1,154.90 kJ/mol  
2
2nd Energy Level
2,074.40 kJ/mol  
10
2,170.00 kJ/mol  
9
3rd Energy Level
3,077.90 kJ/mol  
24
4,245.40 kJ/mol  
9
4th Energy Level
4,052.40 kJ/mol  
99+
5,499.70 kJ/mol  
23
5th Energy Level
5,306.70 kJ/mol  
99+
3,570.00 kJ/mol  
99+
6th Energy Level
11,100.00 kJ/mol  
10
7,030.00 kJ/mol  
99+
7th Energy level
5,800.00 kJ/mol  
99+
3,570.00 kJ/mol  
99+
8th Energy Level
5,800.00 kJ/mol  
99+
4,480.00 kJ/mol  
99+
9th Energy Level
5,650.00 kJ/mol  
99+
5,850.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
4,480.00 kJ/mol  
99+
11th Energy Level
8,300.00 kJ/mol  
24
3,570.00 kJ/mol  
99+
12th Energy Level
8,300.00 kJ/mol  
99+
35,700.00 kJ/mol  
26
13th Energy Level
8,700.00 kJ/mol  
16
4,480.00 kJ/mol  
99+
14th Energy Level
8,300.00 kJ/mol  
16
1,157.00 kJ/mol  
99+
15th Energy Level
87,000.00 kJ/mol  
9
35,700.00 kJ/mol  
99+
16th Energy Level
83,000.00 kJ/mol  
11
35,700.00 kJ/mol  
99+
17th Energy Level
830.80 kJ/mol  
30
1,157.00 kJ/mol  
16
18th Energy Level
8,300.00 kJ/mol  
19
3,570.00 kJ/mol  
99+
19th Energy Level
580.00 kJ/mol  
99+
1,157.60 kJ/mol  
14
20th Energy Level
580.00 kJ/mol  
99+
0.00 kJ/mol  
99+
21st Energy Level
5,800.00 kJ/mol  
21
1,157.00 kJ/mol  
28
22nd Energy Level
580.00 kJ/mol  
99+
357.00 kJ/mol  
99+
23rd Energy Level
5,800.00 kJ/mol  
21
357.60 kJ/mol  
99+
24th Energy Level
538.70 kJ/mol  
99+
357.60 kJ/mol  
99+
25th Energy Level
0.00 kJ/mol  
99+
0.00 kJ/mol  
99+
26th Energy Level
580.00 kJ/mol  
99+
357.60 kJ/mol  
99+
27th Energy Level
580.00 kJ/mol  
99+
0.00 kJ/mol  
99+
28th Energy Level
880.00 kJ/mol  
8
1,157.00 kJ/mol  
2
29th Energy Level
580.00 kJ/mol  
99+
1,157.00 kJ/mol  
3
30th Energy Level
0.00 kJ/mol  
99+
357.60 kJ/mol  
99+
Electrochemical Equivalent
3.10 g/amp-hr  
18
3.00 g/amp-hr  
21
Electron Work Function
4.90 eV  
12
4.90 eV  
12
Other Chemical Properties
-  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
111  
7
112  
6
Electron Configuration
[Rn] 5f14 6d9 7s2  
[Rn] 5f14 6d10 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
111  
7
112  
6
Number of Neutrons
161  
4
285  
1
Number of Electrons
111  
7
112  
6
Radius of an Atom
  
  
Atomic Radius
200.00 pm  
7
147.00 pm  
36
Covalent Radius
126.00 pm  
99+
122.00 pm  
99+
Van der Waals Radius
280.00 pm  
6
0.00 pm  
99+
Atomic Weight
281.00 amu  
6
285.00 amu  
5
Atomic Volume
28.70 cm3/mol  
12
17.80 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Darmstadtium
  
Roentgenium
  
Next Element
Copernicium
  
Nihonium
  
Valence Electron Potential
11.90 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
0.00 pm  
99+
-  
Lattice Angles
-  
-  
Lattice C/A Ratio
1.90  
1
1.58  
36
Mechanical
Density
  
  
Density At Room Temperature
28.70 g/cm3  
6
23.70 g/cm3  
7
Density When Liquid (at m.p.)
28.70 g/cm3  
7
23.70 g/cm3  
8
Tensile Strength
65.00 MPa  
33
0.10 MPa  
99+
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
37
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
31.00 GPa  
25
Bulk Modulus
0.00 GPa  
99+
35.00 GPa  
99+
Young's Modulus
12.70 GPa  
99+
0.00 GPa  
99+
Poisson Ratio
0.30  
14
0.35  
9
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
28.70  
8
23.70  
9
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
12
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
0.20 nΩ·m  
99+
4.90 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
-  
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.10 J/(kg K)  
99+
Molar Heat Capacity
23.70 J/mol·K  
99+
13.10 J/mol·K  
99+
Thermal Conductivity
0.10 W/m·K  
99+
13.00 W/m·K  
99+
Critical Temperature
1,100.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
12.60 µm/(m·K)  
40
13.80 µm/(m·K)  
31
Enthalpy
  
  
Enthalpy of Vaporization
580.00 kJ/mol  
12
357.20 kJ/mol  
31
Enthalpy of Fusion
-  
-  
Enthalpy of Atomization
580.00 kJ/mol  
14
-  
Standard Molar Entropy
57.00 J/mol.K  
30
55.00 J/mol.K  
34
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