Symbol
Hg
  
Yb
  
Group Number
Not Available
  
Period Number
6
  
6
  
Block
d block
  
f block
  
Element Family
Transition Metal
  
Lanthanide
  
Space Group Name
R_ 3m
  
Fm_ 3m
  
Interesting Facts
- 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.
  
- Ytterbium metal oxidizes rapidly if exposed to air.
- Ytterbium metal can dissolve quickly in Mineral acid.
  
Sources
Mining, Ores of Minerals
  
Found in Minerals, Mining, Ores of Minerals
  
History
  
  
Who Discovered
Ancient Chinese and Indians
  
Jean Charles Galissard de Marignac
  
Discovery
Before 2000 BCE
  
In 1878
  
Abundance
  
  
Abundance In Universe
Not Available
  
Abundance In Sun
~-9999 %
  
~0.0000001 %
  
26
Abundance In Meteorites
Not Available
  
Abundance In Earth's Crust
Abundance In Oceans
Not Available
  
Uses & Benefits
- 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.
  
- Ytterbium metal is used in memory devices and tuneable laser.
-
It is also used as industrial catalyst as the other catalysts are too toxic and polluting.
  
Industrial Uses
Electrical Industry, Electronic Industry
  
Automobile Industry, Chemical Industry
  
Medical Uses
Dentistry
  
NA
  
Other Uses
Alloys, Mirror Manufacturing, Pharmaceutical Industry
  
Alloys
  
Biological Properties
  
  
Toxicity
Highly Toxic
  
Highly Toxic
  
Present in Human Body
Yes
  
No
  
In Blood
0.01 Blood/mg dm-3
  
23
Not Available
  
In Bone
0.45 p.p.m.
  
19
Not Available
  
Melting Point
Not Available
  
Boiling Point
1,196.00 °C
  
99+
Appearance
  
  
Physical State
Liquid
  
Solid
  
Color
Silver
  
Silvery White
  
Luster
NA
  
Metallic
  
Hardness
  
  
Brinell Hardness
Not Available
  
Vickers Hardness
Not Available
  
Speed of Sound
1,451.40 m/s
  
99+
1,590.00 m/s
  
99+
Optical Properties
  
  
Refractive Index
Not Available
  
Reflectivity
Not Available
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Hg
  
Yb
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Sanderson Electronegativity
Not Available
  
Allred Rochow Electronegativity
Mulliken-Jaffe Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
1,007.10 kJ/mol
  
4
603.40 kJ/mol
  
99+
2nd Energy Level
1,810.00 kJ/mol
  
20
1,174.80 kJ/mol
  
99+
3rd Energy Level
3,300.00 kJ/mol
  
20
2,417.00 kJ/mol
  
99+
4th Energy Level
Not Available
  
4,203.00 kJ/mol
  
31
Electrochemical Equivalent
3.74 g/amp-hr
  
10
2.15 g/amp-hr
  
25
Electron Work Function
Not Available
  
Other Chemical Properties
Flammability, Ionization, Solubility
  
Ionization, Radioactive Isotopes, Solubility
  
Electron Configuration
[Xe] 4f14 5d10 6s2
  
[Xe] 4f14 6s2
  
Crystal Structure
Rhombohedral (RHO)
  
Face Centered Cubic (FCC)
  
Crystal Lattice
RHO-Crystal-Structure-of-Mercury.jpg#100
  
FCC-Crystal-Structure-of-Ytterbium.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Atomic Weight
173.05 amu
  
99+
Atomic Volume
14.82 cm3/mol
  
35
24.79 cm3/mol
  
9
Adjacent Atomic Numbers
  
  
Valence Electron Potential
28.20 (-eV)
  
99+
50.30 (-eV)
  
27
Lattice Angles
NA
  
π/2, π/2, π/2
  
Lattice C/A Ratio
Not Available
  
Not Available
  
Density
  
  
Density At Room Temperature
13.53 g/cm3
  
24
6.90 g/cm3
  
99+
Density When Liquid (at m.p.)
Not Available
  
6.21 g/cm3
  
99+
Tensile Strength
Not Available
  
Viscosity
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available
  
Bulk Modulus
Not Available
  
Young's Modulus
Not Available
  
Poisson Ratio
Not Available
  
Other Mechanical Properties
NA
  
Ductile, Malleable
  
Magnetic Characteristics
  
  
Magnetic Ordering
Diamagnetic
  
Paramagnetic
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Conductor
  
Electrical Conductivity
0.01 106/cm Ω
  
99+
0.04 106/cm Ω
  
38
Electron Affinity
0.00 kJ/mol
  
40
50.00 kJ/mol
  
21
Specific Heat
0.14 J/(kg K)
  
38
0.15 J/(kg K)
  
36
Molar Heat Capacity
27.98 J/mol·K
  
13
26.74 J/mol·K
  
25
Thermal Conductivity
8.30 W/m·K
  
99+
38.50 W/m·K
  
35
Thermal Expansion
60.40 µm/(m·K)
  
5
26.30 µm/(m·K)
  
14
Enthalpy
  
  
Enthalpy of Vaporization
56.90 kJ/mol
  
99+
128.90 kJ/mol
  
99+
Enthalpy of Fusion
2.29 kJ/mol
  
99+
7.66 kJ/mol
  
99+
Enthalpy of Atomization
61.50 kJ/mol
  
99+
180.00 kJ/mol
  
99+
Standard Molar Entropy
75.80 J/mol.K
  
6
59.90 J/mol.K
  
21