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Roentgenium vs Gold

Roentgenium
Gold
Gold vs Roentgenium


Periodic Table
Symbol
Rg  
Au  
Group Number
11  
7
11  
7
Period Number
7  
6  
Block
d block  
d block  
Element Family
-  
Transition Metal  
CAS Number
54386242  
1
7440575  
31
Space Group Name
-  
Fm_ 3m  
Space Group Number
194.00  
7
225.00  
3
Facts
Interesting Facts
Roentgenium is a highly unstable synthetic element.  
  • It is found in copper ores and from the crust of the earth.
  • It is the most malleable and ductile metal.
  • Gold alloys are used in Dentistry as fillings, crowning, clips, etc. It is also used as an artificial limb joints.
  
Sources
Synthetically Produced  
Earth's crust, Mining, Ores of metals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
-  
Discovery
In 1994  
Before 6000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
27
Abundance In Sun
-  
0.00 %  
26
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
99+
Abundance In Oceans
-  
0.00 %  
21
Abundance In Humans
-  
0.00 %  
21
Uses
Uses & Benefits
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
  • Gold metal is mainly used for Jewelry, bullion, coinage, etc.
  • It is used in the art, decoration, ornaments, etc. It is also used for electroplating process.
  
Industrial Uses
-  
Chemical Industry, Clothing Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
Dentistry, Pharmaceutical Industry  
Other Uses
Research Purposes  
Alloys, Bullion, Coinage, Jewellery, Sculptures, Statues  
Biological Properties
  
  
Toxicity
-  
Non Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
38
In Bone
0.00 p.p.m.  
99+
0.02 p.p.m.  
35
Physical
Melting Point
-  
1,064.43 °C  
99+
Boiling Point
2,800.00 °C  
38
2,807.00 °C  
37
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Gold  
Luster
Unknown Luster  
Metallic  
Hardness
  
  
Mohs Hardness
-  
2.50  
15
Brinell Hardness
700.00 MPa  
17
194.00 MPa  
99+
Vickers Hardness
450.00 MPa  
38
216.00 MPa  
99+
Speed of Sound
3,430.00 m/s  
32
2,030.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
0.47  
99+
Reflectivity
64.00 %  
19
95.00 %  
2
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rg  
Au  
Isotopes
  
  
Known Isotopes
1  
34
36  
3
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
2.54  
2
Sanderson Electronegativity
1.90  
13
1.50  
18
Allred Rochow Electronegativity
1.30  
25
1.42  
19
Mulliken-Jaffe Electronegativity
0.90  
99+
1.87  
15
Allen Electronegativity
0.80  
99+
1.92  
7
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
1.46  
99+
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol  
3
890.10 kJ/mol  
8
2nd Energy Level
2,074.40 kJ/mol  
10
1,980.00 kJ/mol  
12
3rd Energy Level
3,077.90 kJ/mol  
24
2,856.00 kJ/mol  
33
4th Energy Level
4,052.40 kJ/mol  
99+
890.10 kJ/mol  
99+
5th Energy Level
5,306.70 kJ/mol  
99+
8,901.00 kJ/mol  
6
6th Energy Level
11,100.00 kJ/mol  
10
8,901.00 kJ/mol  
24
7th Energy level
5,800.00 kJ/mol  
99+
8,901.00 kJ/mol  
21
8th Energy Level
5,800.00 kJ/mol  
99+
8,900.00 kJ/mol  
20
9th Energy Level
5,650.00 kJ/mol  
99+
8,901.00 kJ/mol  
20
10th Energy Level
5,800.00 kJ/mol  
99+
8,901.00 kJ/mol  
21
11th Energy Level
8,300.00 kJ/mol  
24
8,901.00 kJ/mol  
19
12th Energy Level
8,300.00 kJ/mol  
99+
8,900.00 kJ/mol  
39
13th Energy Level
8,700.00 kJ/mol  
16
8,900.00 kJ/mol  
14
14th Energy Level
8,300.00 kJ/mol  
16
890.10 kJ/mol  
99+
15th Energy Level
87,000.00 kJ/mol  
9
89,000.00 kJ/mol  
7
16th Energy Level
83,000.00 kJ/mol  
11
890.10 kJ/mol  
99+
17th Energy Level
830.80 kJ/mol  
30
890.10 kJ/mol  
25
18th Energy Level
8,300.00 kJ/mol  
19
8,901.00 kJ/mol  
14
19th Energy Level
580.00 kJ/mol  
99+
890.10 kJ/mol  
23
20th Energy Level
580.00 kJ/mol  
99+
890.00 kJ/mol  
13
21st Energy Level
5,800.00 kJ/mol  
21
890.10 kJ/mol  
35
22nd Energy Level
580.00 kJ/mol  
99+
890.00 kJ/mol  
11
23rd Energy Level
5,800.00 kJ/mol  
21
890.10 kJ/mol  
38
24th Energy Level
538.70 kJ/mol  
99+
890.10 kJ/mol  
6
25th Energy Level
0.00 kJ/mol  
99+
890.00 kJ/mol  
5
26th Energy Level
580.00 kJ/mol  
99+
890.10 kJ/mol  
5
27th Energy Level
580.00 kJ/mol  
99+
890.10 kJ/mol  
4
28th Energy Level
880.00 kJ/mol  
8
890.10 kJ/mol  
7
29th Energy Level
580.00 kJ/mol  
99+
890.10 kJ/mol  
8
30th Energy Level
0.00 kJ/mol  
99+
890.10 kJ/mol  
5
Electrochemical Equivalent
3.10 g/amp-hr  
18
2.45 g/amp-hr  
25
Electron Work Function
4.90 eV  
12
5.10 eV  
8
Other Chemical Properties
-  
Chemical Stability, Ionization, Solubility  
Atomic
Atomic Number
111  
7
79  
37
Electron Configuration
[Rn] 5f14 6d9 7s2  
[Xe] 4f14 5d10 6s1  
Crystal Structure
Body Centered Cubic (BCC)  
Face Centered Cubic (FCC)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
FCC-Crystal-Structure-of-Gold.jpg#100  
Atom
  
  
Number of Protons
111  
7
79  
37
Number of Neutrons
161  
4
118  
24
Number of Electrons
111  
7
79  
37
Radius of an Atom
  
  
Atomic Radius
200.00 pm  
7
151.00 pm  
34
Covalent Radius
126.00 pm  
99+
144.00 pm  
99+
Van der Waals Radius
280.00 pm  
6
166.00 pm  
99+
Atomic Weight
281.00 amu  
6
196.97 amu  
33
Atomic Volume
28.70 cm3/mol  
12
10.20 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Darmstadtium
  
Platinum
  
Next Element
Copernicium
  
Mercury
  
Valence Electron Potential
11.90 (-eV)  
99+
43.40 (-eV)  
99+
Lattice Constant
0.00 pm  
99+
407.82 pm  
24
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.90  
1
1.61  
18
Mechanical
Density
  
  
Density At Room Temperature
28.70 g/cm3  
6
19.30 g/cm3  
15
Density When Liquid (at m.p.)
28.70 g/cm3  
7
17.31 g/cm3  
16
Tensile Strength
65.00 MPa  
33
120.00 MPa  
27
Viscosity
0.00  
25
0.00  
23
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
25
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
67.00 (Pa)  
4
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
27.00 GPa  
34
Bulk Modulus
0.00 GPa  
99+
180.00 GPa  
9
Young's Modulus
12.70 GPa  
99+
79.00 GPa  
26
Poisson Ratio
0.30  
14
0.40  
4
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
28.70  
8
19.32  
17
Magnetic Ordering
-  
Diamagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
10
Susceptibility
0.00  
24
0.00  
22
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.20 nΩ·m  
99+
2.20 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.45 106/cm Ω  
3
Electron Affinity
50.00 kJ/mol  
26
222.80 kJ/mol  
1
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.13 J/(kg K)  
40
Molar Heat Capacity
23.70 J/mol·K  
99+
25.42 J/mol·K  
99+
Thermal Conductivity
0.10 W/m·K  
99+
318.00 W/m·K  
3
Critical Temperature
1,100.00 K  
99+
1,337.00 K  
99+
Thermal Expansion
12.60 µm/(m·K)  
40
14.20 µm/(m·K)  
29
Enthalpy
  
  
Enthalpy of Vaporization
580.00 kJ/mol  
12
324.40 kJ/mol  
99+
Enthalpy of Fusion
-  
12.55 kJ/mol  
33
Enthalpy of Atomization
580.00 kJ/mol  
14
364.00 kJ/mol  
34
Standard Molar Entropy
57.00 J/mol.K  
30
47.40 J/mol.K  
99+
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