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Mendelevium vs Mercury

Mendelevium
Mercury
Mercury vs Mendelevium


Periodic Table
Symbol
Md  
Hg  
Group Number
3  
15
12  
6
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440111  
99+
7439976  
99+
Space Group Name
-  
R_ 3m  
Space Group Number
194.00  
7
166.00  
9
Facts
Interesting Facts
  • Mendelevium metal is synthetically produced metal.
  • Mendelevium metal has been produced in only trace amount.
  
  • 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
Bombarding Einsteinium with Helium Ions  
Mining, Ores of Minerals  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
Ancient Chinese and Indians  
Discovery
In 1955  
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+
0.00 %  
99+
Abundance In Earth's Crust
-  
0.05 %  
9
Abundance In Oceans
-  
-  
Abundance In Humans
0.00 %  
24
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Mendelevium 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
-  
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
827.00 °C  
99+
-38.83 °C  
99+
Boiling Point
0.00 °C  
99+
356.58 °C  
99+
Appearance
  
  
Physical State
Solid  
Liquid  
Color
-  
Silver  
Luster
Metallic  
-  
Hardness
  
  
Mohs Hardness
-  
1.50  
19
Brinell Hardness
350.00 MPa  
36
5.00 MPa  
99+
Vickers Hardness
0.00 MPa  
99+
0.00 MPa  
99+
Speed of Sound
2,680.00 m/s  
99+
1,451.40 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.00  
99+
Reflectivity
66.00 %  
17
73.00 %  
10
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Md  
Hg  
Isotopes
  
  
Known Isotopes
16  
23
34  
5
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
2.00  
8
Sanderson Electronegativity
1.30  
25
2.20  
8
Allred Rochow Electronegativity
1.20  
28
1.44  
18
Mulliken-Jaffe Electronegativity
1.30  
33
1.81  
17
Allen Electronegativity
1.30  
40
1.44  
34
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
2.00  
99+
Ionization Energies
  
  
1st Energy Level
635.00 kJ/mol  
99+
1,007.10 kJ/mol  
4
2nd Energy Level
1,235.00 kJ/mol  
99+
1,810.00 kJ/mol  
21
3rd Energy Level
2,470.00 kJ/mol  
99+
3,300.00 kJ/mol  
20
4th Energy Level
3,840.00 kJ/mol  
99+
1,007.10 kJ/mol  
99+
5th Energy Level
6,350.00 kJ/mol  
36
1,007.00 kJ/mol  
99+
6th Energy Level
6,350.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
7th Energy level
6,350.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
8th Energy Level
6,350.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
9th Energy Level
6,350.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
10th Energy Level
6,350.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
11th Energy Level
6,400.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
12th Energy Level
60,100.00 kJ/mol  
16
1,007.00 kJ/mol  
99+
13th Energy Level
6,350.00 kJ/mol  
37
1,007.00 kJ/mol  
99+
14th Energy Level
1,150.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
15th Energy Level
63,500.00 kJ/mol  
37
100,700.00 kJ/mol  
1
16th Energy Level
635.00 kJ/mol  
99+
1,007.00 kJ/mol  
99+
17th Energy Level
1,107.00 kJ/mol  
21
1,007.00 kJ/mol  
24
18th Energy Level
6,350.00 kJ/mol  
39
1,007.00 kJ/mol  
99+
19th Energy Level
635.00 kJ/mol  
99+
1,007.10 kJ/mol  
20
20th Energy Level
635.00 kJ/mol  
40
1,007.00 kJ/mol  
11
21st Energy Level
6,350.00 kJ/mol  
13
1,007.00 kJ/mol  
33
22nd Energy Level
635.00 kJ/mol  
34
1,007.00 kJ/mol  
8
23rd Energy Level
6,350.00 kJ/mol  
13
1,007.00 kJ/mol  
36
24th Energy Level
635.00 kJ/mol  
36
1,007.10 kJ/mol  
3
25th Energy Level
635.00 kJ/mol  
38
1,007.10 kJ/mol  
3
26th Energy Level
635.00 kJ/mol  
37
1,007.10 kJ/mol  
3
27th Energy Level
635.00 kJ/mol  
39
1,007.10 kJ/mol  
2
28th Energy Level
635.00 kJ/mol  
99+
1,007.10 kJ/mol  
5
29th Energy Level
635.00 kJ/mol  
99+
1,007.10 kJ/mol  
6
30th Energy Level
635.00 kJ/mol  
40
1,007.10 kJ/mol  
3
Electrochemical Equivalent
3.21 g/amp-hr  
13
3.74 g/amp-hr  
10
Electron Work Function
3.89 eV  
37
4.49 eV  
20
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Flammability, Ionization, Solubility  
Atomic
Atomic Number
101  
17
80  
36
Electron Configuration
[Rn] 5f13 7s2  
[Xe] 4f14 5d10 6s2  
Crystal Structure
Not Known  
Rhombohedral (RHO)  
Crystal Lattice
Unknown-Crystal-Structure-of-Mendelevium.jpg#100  
RHO-Crystal-Structure-of-Mercury.jpg#100  
Atom
  
  
Number of Protons
101  
17
80  
36
Number of Neutrons
157  
8
121  
23
Number of Electrons
101  
17
80  
36
Radius of an Atom
  
  
Atomic Radius
175.00 pm  
21
151.00 pm  
34
Covalent Radius
175.00 pm  
25
132.00 pm  
99+
Van der Waals Radius
246.00 pm  
12
155.00 pm  
99+
Atomic Weight
258.00 amu  
14
200.59 amu  
32
Atomic Volume
19.90 cm3/mol  
32
14.82 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Fermium
  
Gold
  
Next Element
Nobelium
  
Thallium
  
Valence Electron Potential
63.70 (-eV)  
23
28.20 (-eV)  
99+
Lattice Constant
-  
300.50 pm  
99+
Lattice Angles
-  
-  
Lattice C/A Ratio
1.58  
36
0.42  
99+
Mechanical
Density
  
  
Density At Room Temperature
10.30 g/cm3  
38
13.53 g/cm3  
25
Density When Liquid (at m.p.)
10.30 g/cm3  
39
13.55 g/cm3  
27
Tensile Strength
80.00 MPa  
29
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)  
37
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
32.00 GPa  
24
30.00 GPa  
27
Bulk Modulus
0.00 GPa  
99+
25.00 GPa  
99+
Young's Modulus
12.00 GPa  
99+
45.00 GPa  
99+
Poisson Ratio
0.30  
14
0.44  
3
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
13.50  
29
13.53  
27
Magnetic Ordering
-  
Diamagnetic  
Permeability
0.00 H/m  
11
0.00 H/m  
10
Susceptibility
0.00  
24
0.00  
20
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
0.63 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
0.10 J/(kg K)  
99+
0.14 J/(kg K)  
39
Molar Heat Capacity
27.00 J/mol·K  
29
27.98 J/mol·K  
16
Thermal Conductivity
0.00 W/m·K  
99+
8.30 W/m·K  
99+
Critical Temperature
1,100.00 K  
99+
1,750.00 K  
33
Thermal Expansion
11.60 µm/(m·K)  
99+
60.40 µm/(m·K)  
5
Enthalpy
  
  
Enthalpy of Vaporization
380.50 kJ/mol  
26
56.90 kJ/mol  
99+
Enthalpy of Fusion
-  
2.29 kJ/mol  
99+
Enthalpy of Atomization
410.80 kJ/mol  
25
61.50 kJ/mol  
99+
Standard Molar Entropy
37.40 J/mol.K  
99+
75.80 J/mol.K  
6
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