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Curium vs Mercury

Curium
Mercury
Mercury vs Curium


Periodic Table
Symbol
Cm   
Hg   
Group Number
Not Available   
12   
6
Period Number
7   
6   
Block
f block   
d block   
Element Family
Actinide   
Transition Metal   
CAS Number
7440519   
36
7439976   
99+
Space Group Name
Not Available   
R_ 3m   
Space Group Number
Not Available   
166.00   
6
Facts
Interesting Facts
  • Curium metal does not occur free in nature.
  • Curium metal is a synthetically produced metal.
  
  • 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 Plutonium with Helium Ions   
Mining, Ores of Minerals   
History
  
  
Who Discovered
Glenn T. Seaborg, Ralph A. James, Albert Ghiorso   
Ancient Chinese and Indians   
Discovery
In 1944   
Before 2000 BCE   
Abundance
  
  
Abundance In Earth's Crust
Not Available   
0.05 %   
9
Uses
Uses & Benefits
  • Curium metal is used to provide power to electrical equipment for space missions.
  
  • 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
Research Purposes   
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
1,340.00 °C   
34
Not Available   
Boiling Point
3,110.00 °C   
30
356.58 °C   
99+
Appearance
  
  
Physical State
Solid   
Liquid   
Color
Silver   
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
Cm   
Hg   
Isotopes
  
  
Known Isotopes
15   
24
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
581.00 kJ/mol   
99+
1,007.10 kJ/mol   
4
2nd Energy Level
1,196.00 kJ/mol   
99+
1,810.00 kJ/mol   
20
3rd Energy Level
2,026.00 kJ/mol   
99+
3,300.00 kJ/mol   
20
4th Energy Level
3,550.00 kJ/mol   
99+
Not Available   
Electrochemical Equivalent
3.07 g/amp-hr   
16
3.74 g/amp-hr   
10
Electron Work Function
Not Available   
4.49 eV   
15
Other Chemical Properties
Ionization, Radioactive Isotopes   
Flammability, Ionization, Solubility   
Atomic Properties
Atomic Number
96   
22
80   
36
Electron Configuration
[Rn] 5f7 6d1 7s2   
[Xe] 4f14 5d10 6s2   
Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Rhombohedral (RHO)   
Crystal Lattice
DHCP-Crystal-Structure-of-Curium.jpg#100   
RHO-Crystal-Structure-of-Mercury.jpg#100   
Atom
  
  
Number of Protons
96   
22
80   
36
Number of Neutrons
151   
10
121   
22
Number of Electrons
96   
22
80   
36
Radius of an Atom
  
  
Atomic Radius
174.00 pm   
20
151.00 pm   
32
Covalent Radius
169.00 pm   
26
132.00 pm   
99+
Van der Waals Radius
200.00 pm   
28
155.00 pm   
99+
Atomic Weight
247.00 amu   
18
200.59 amu   
32
Atomic Volume
18.28 cm3/mol   
26
14.82 cm3/mol   
35
Adjacent Atomic Numbers
  
  
Previous Element
Americium
  
Gold
  
Next Element
Berkelium
  
Thallium
  
Valence Electron Potential
44.50 (-eV)   
38
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
13.51 g/cm3   
25
13.53 g/cm3   
24
Density When Liquid (at m.p.)
13.85 g/cm3   
10
Not Available   
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
13.51   
17
13.53   
16
Magnetic Ordering
Antiferromagnetic   
Diamagnetic   
Electrical Properties
  
  
Electrical Property
Unknown   
Conductor   
Resistivity
1.25 nΩ·m   
99+
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
15.00 kJ/mol   
21
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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