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Mendelevium Mercury Comparison


Mercury Mendelevium comparison


Periodic Table

Symbol
Md   
Hg   

Group Number
Not Available   
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
Not Available   
R_ 3m   

Space Group Number
Not Available   
166.00   
6

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 Earth's Crust
Not Available   
0.05 %   
9

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
NA   
Electrical Industry, Electronic Industry   

Medical Uses
NA   
Dentistry   

Other Uses
NA   
Alloys, Mirror Manufacturing, Pharmaceutical Industry   

Biological Properties
  
  

Toxicity
Unknown   
Highly Toxic   

Present in Human Body
No   
Yes   

In Blood
0.00 Blood/mg dm-3   
37
0.01 Blood/mg dm-3   
23

In Bone
0.00 p.p.m.   
36
0.45 p.p.m.   
19

Physical Properties

Melting Point
827.00 °C   
99+
Not Available   

Boiling Point
Not Available   
356.58 °C   
99+

Appearance
  
  

Physical State
Solid   
Liquid   

Color
Unknown   
Silver   

Luster
Metallic   
NA   

Hardness
  
  

Speed of Sound
Not Available   
1,451.40 m/s   
99+

Optical Properties
  
  

Refractive Index
Not Available   
1.00   
3

Reflectivity
Not Available   
73.00 %   
8

Allotropes
No   
No   

α Allotropes
Not Available   
Not Available   

β Allotropes
Not Available   
Not Available   

γ Allotropes
Not Available   
Not Available   

Chemical Properties

Chemical Formula
Md   
Hg   

Isotopes
  
  

Known Isotopes
16   
23
34   
5

Electronegativity
  
  

Pauling Electronegativity
1.30   
32
2.00   
7

Sanderson Electronegativity
Not Available   
2.20   
7

Allred Rochow Electronegativity
1.20   
27
1.44   
17

Mulliken-Jaffe Electronegativity
Not Available   
1.81   
9

Allen Electronegativity
Not Available   
1.44   
30

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   
20

3rd Energy Level
2,470.00 kJ/mol   
99+
3,300.00 kJ/mol   
20

4th Energy Level
3,840.00 kJ/mol   
99+
Not Available   

Electrochemical Equivalent
3.21 g/amp-hr   
12
3.74 g/amp-hr   
10

Electron Work Function
Not Available   
4.49 eV   
15

Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Flammability, Ionization, Solubility   

Atomic Properties

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   
7
121   
22

Number of Electrons
101   
17
80   
36

Radius of an Atom
  
  

Atomic Radius
Not Available   
151.00 pm   
32

Covalent Radius
Not Available   
132.00 pm   
99+

Van der Waals Radius
246.00 pm   
8
155.00 pm   
99+

Atomic Weight
258.00 amu   
14
200.59 amu   
32

Atomic Volume
Not Available   
14.82 cm3/mol   
35

Adjacent Atomic Numbers
  
  

Previous Element
Fermium
  
Gold
  

Next Element
Nobelium
  
Thallium
  

Valence Electron Potential
Not Available   
28.20 (-eV)   
99+

Lattice Constant
Not Available   
300.50 pm   
99+

Lattice Angles
NA   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

Mechanical Properties

Density
  
  

Density At Room Temperature
Not Available   
13.53 g/cm3   
24

Tensile Strength
Not Available   
Not Available   

Viscosity
Not Available   
0.00   
1

Vapor Pressure
  
  

Elasticity properties
  
  

Poisson Ratio
Not Available   
Not Available   

Other Mechanical Properties
Unknown   
NA   

Magnetic Properties

Magnetic Characteristics
  
  

Specific Gravity
Not Available   
13.53   
16

Magnetic Ordering
Unknown   
Diamagnetic   

Electrical Properties
  
  

Electrical Property
Unknown   
Conductor   

Resistivity
Not Available   
961.00 nΩ·m   
1

Electrical Conductivity
Not Available   
0.01 106/cm Ω   
99+

Electron Affinity
Not Available   
0.00 kJ/mol   
40

Thermal Properties

Specific Heat
Not Available   
0.14 J/(kg K)   
38

Molar Heat Capacity
Not Available   
27.98 J/mol·K   
13

Thermal Conductivity
Not Available   
8.30 W/m·K   
99+

Critical Temperature
Not Available   
1,750.00 K   
6

Thermal Expansion
Not Available   
60.40 µm/(m·K)   
5

Enthalpy
  
  

Enthalpy of Vaporization
Not Available   
56.90 kJ/mol   
99+

Enthalpy of Fusion
Not Available   
2.29 kJ/mol   
99+

Enthalpy of Atomization
Not Available   
61.50 kJ/mol   
99+

Standard Molar Entropy
Not Available   
75.80 J/mol.K   
6

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