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Roentgenium vs Mercury

Roentgenium
Mercury
Mercury vs Roentgenium


Periodic Table
Symbol
Rg  
Hg  
Group Number
11  
7
12  
6
Period Number
7  
6  
Block
d block  
d block  
Element Family
-  
Transition Metal  
CAS Number
54386242  
1
7439976  
99+
Space Group Name
-  
R_ 3m  
Space Group Number
194.00  
7
166.00  
9
Facts
Interesting Facts
Roentgenium is a highly unstable synthetic element.  
  • At room temperature mercury is found in a liquid state.
  • A coin of pound or rupees floats in mercury.
  • Because of its low melting point and boiling point it is used in thermometers.
  
Sources
Synthetically Produced  
Mining, Ores of Minerals  
History
  
  
Who Discovered
Gesellschaft für Schwerionenforschung  
Ancient Chinese and Indians  
Discovery
In 1994  
Before 2000 BCE  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.09 %  
2
Abundance In Sun
-  
0.00 %  
30
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
-  
0.05 %  
9
Abundance In Oceans
-  
-  
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Roentgenium metal are limited to research purpose only.
  
  • It is a liquid metal at room temperature, but it is a toxic heavy metal and hence many uses of mercury are under review or phased out.
  • It is manly used as a catalysts in chemical industry.
  
Industrial Uses
-  
Electrical Industry, Electronic Industry  
Medical Uses
-  
Dentistry  
Other Uses
Research Purposes  
Alloys, Mirror Manufacturing, Pharmaceutical Industry  
Biological Properties
  
  
Toxicity
-  
Highly Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.01 Blood/mg dm-3  
23
In Bone
0.00 p.p.m.  
99+
0.45 p.p.m.  
23
Physical
Melting Point
-  
-38.83 °C  
99+
Boiling Point
2,800.00 °C  
38
356.58 °C  
99+
Appearance
  
  
Physical State
Solid  
Liquid  
Color
Silver  
Silver  
Luster
Unknown Luster  
-  
Hardness
  
  
Mohs Hardness
-  
1.50  
19
Brinell Hardness
700.00 MPa  
17
5.00 MPa  
99+
Vickers Hardness
450.00 MPa  
38
0.00 MPa  
99+
Speed of Sound
3,430.00 m/s  
32
1,451.40 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.00  
99+
Reflectivity
64.00 %  
19
73.00 %  
10
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Rg  
Hg  
Isotopes
  
  
Known Isotopes
1  
34
34  
5
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
2.00  
8
Sanderson Electronegativity
1.90  
13
2.20  
8
Allred Rochow Electronegativity
1.30  
25
1.44  
18
Mulliken-Jaffe Electronegativity
0.90  
99+
1.81  
17
Allen Electronegativity
0.80  
99+
1.44  
34
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
2.00  
99+
Ionization Energies
  
  
1st Energy Level
1,022.70 kJ/mol  
3
1,007.10 kJ/mol  
4
2nd Energy Level
2,074.40 kJ/mol  
10
1,810.00 kJ/mol  
21
3rd Energy Level
3,077.90 kJ/mol  
24
3,300.00 kJ/mol  
20
4th Energy Level
4,052.40 kJ/mol  
99+
1,007.10 kJ/mol  
99+
5th Energy Level
5,306.70 kJ/mol  
99+
1,007.00 kJ/mol  
99+
6th Energy Level
11,100.00 kJ/mol  
10
1,007.00 kJ/mol  
99+
7th Energy level
5,800.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
8th Energy Level
5,800.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
9th Energy Level
5,650.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
10th Energy Level
5,800.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
11th Energy Level
8,300.00 kJ/mol  
24
1,007.00 kJ/mol  
99+
12th Energy Level
8,300.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
13th Energy Level
8,700.00 kJ/mol  
16
1,007.00 kJ/mol  
99+
14th Energy Level
8,300.00 kJ/mol  
16
1,007.00 kJ/mol  
99+
15th Energy Level
87,000.00 kJ/mol  
9
100,700.00 kJ/mol  
1
16th Energy Level
83,000.00 kJ/mol  
11
1,007.00 kJ/mol  
99+
17th Energy Level
830.80 kJ/mol  
30
1,007.00 kJ/mol  
24
18th Energy Level
8,300.00 kJ/mol  
19
1,007.00 kJ/mol  
99+
19th Energy Level
580.00 kJ/mol  
99+
1,007.10 kJ/mol  
20
20th Energy Level
580.00 kJ/mol  
99+
1,007.00 kJ/mol  
11
21st Energy Level
5,800.00 kJ/mol  
21
1,007.00 kJ/mol  
33
22nd Energy Level
580.00 kJ/mol  
99+
1,007.00 kJ/mol  
8
23rd Energy Level
5,800.00 kJ/mol  
21
1,007.00 kJ/mol  
36
24th Energy Level
538.70 kJ/mol  
99+
1,007.10 kJ/mol  
3
25th Energy Level
0.00 kJ/mol  
99+
1,007.10 kJ/mol  
3
26th Energy Level
580.00 kJ/mol  
99+
1,007.10 kJ/mol  
3
27th Energy Level
580.00 kJ/mol  
99+
1,007.10 kJ/mol  
2
28th Energy Level
880.00 kJ/mol  
8
1,007.10 kJ/mol  
5
29th Energy Level
580.00 kJ/mol  
99+
1,007.10 kJ/mol  
6
30th Energy Level
0.00 kJ/mol  
99+
1,007.10 kJ/mol  
3
Electrochemical Equivalent
3.10 g/amp-hr  
18
3.74 g/amp-hr  
10
Electron Work Function
4.90 eV  
12
4.49 eV  
20
Other Chemical Properties
-  
Flammability, Ionization, Solubility  
Atomic
Atomic Number
111  
7
80  
36
Electron Configuration
[Rn] 5f14 6d9 7s2  
[Xe] 4f14 5d10 6s2  
Crystal Structure
Body Centered Cubic (BCC)  
Rhombohedral (RHO)  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
RHO-Crystal-Structure-of-Mercury.jpg#100  
Atom
  
  
Number of Protons
111  
7
80  
36
Number of Neutrons
161  
4
121  
23
Number of Electrons
111  
7
80  
36
Radius of an Atom
  
  
Atomic Radius
200.00 pm  
7
151.00 pm  
34
Covalent Radius
126.00 pm  
99+
132.00 pm  
99+
Van der Waals Radius
280.00 pm  
6
155.00 pm  
99+
Atomic Weight
281.00 amu  
6
200.59 amu  
32
Atomic Volume
28.70 cm3/mol  
12
14.82 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Darmstadtium
  
Gold
  
Next Element
Copernicium
  
Thallium
  
Valence Electron Potential
11.90 (-eV)  
99+
28.20 (-eV)  
99+
Lattice Constant
0.00 pm  
99+
300.50 pm  
99+
Lattice Angles
-  
-  
Lattice C/A Ratio
1.90  
1
0.42  
99+
Mechanical
Density
  
  
Density At Room Temperature
28.70 g/cm3  
6
13.53 g/cm3  
25
Density When Liquid (at m.p.)
28.70 g/cm3  
7
13.55 g/cm3  
27
Tensile Strength
65.00 MPa  
33
15.00 MPa  
99+
Viscosity
0.00  
25
0.00  
4
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
26.00 GPa  
36
30.00 GPa  
27
Bulk Modulus
0.00 GPa  
99+
25.00 GPa  
99+
Young's Modulus
12.70 GPa  
99+
45.00 GPa  
99+
Poisson Ratio
0.30  
14
0.44  
3
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
28.70  
8
13.53  
27
Magnetic Ordering
-  
Diamagnetic  
Permeability
0.00 H/m  
12
0.00 H/m  
10
Susceptibility
0.00  
24
0.00  
20
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.20 nΩ·m  
99+
961.00 nΩ·m  
1
Electrical Conductivity
0.00 106/cm Ω  
99+
0.01 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.14 J/(kg K)  
39
Molar Heat Capacity
23.70 J/mol·K  
99+
27.98 J/mol·K  
16
Thermal Conductivity
0.10 W/m·K  
99+
8.30 W/m·K  
99+
Critical Temperature
1,100.00 K  
99+
1,750.00 K  
33
Thermal Expansion
12.60 µm/(m·K)  
40
60.40 µm/(m·K)  
5
Enthalpy
  
  
Enthalpy of Vaporization
580.00 kJ/mol  
12
56.90 kJ/mol  
99+
Enthalpy of Fusion
-  
2.29 kJ/mol  
99+
Enthalpy of Atomization
580.00 kJ/mol  
14
61.50 kJ/mol  
99+
Standard Molar Entropy
57.00 J/mol.K  
30
75.80 J/mol.K  
6
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