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Nobelium vs Ytterbium

Nobelium
Ytterbium
Ytterbium vs Nobelium


Periodic Table
Symbol
No   
Yb   
Group Number
Not Available   
Not Available   
Period Number
7   
6   
Block
f block   
f block   
Element Family
Actinide   
Lanthanide   
CAS Number
10028145   
16
7440644   
26
Space Group Name
Not Available   
Fm_ 3m   
Space Group Number
Not Available   
225.00   
2
Facts
Interesting Facts
  • The most stable isotope of Nobelium metal is No-259.
  • No-259 has a half-life of fifty-eight minutes.
  
  • Ytterbium metal oxidizes rapidly if exposed to air.
  • Ytterbium metal can dissolve quickly in Mineral acid.
  
Sources
Bombarding Curium-246 or Curium-249 with Carbon-12 Nuclei, Found in Minerals, Mining   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Joint Institute for Nuclear Research   
Jean Charles Galissard de Marignac   
Discovery
In 1966   
In 1878   
Abundance
  
  
Abundance In Universe
Not Available   
2 * 10-7 %   
22
Abundance In Sun
~-9999 %   
~0.0000001 %   
26
Abundance In Meteorites
Not Available   
0.00 %   
36
Abundance In Earth's Crust
Not Available   
0.00 %   
33
Abundance In Oceans
Not Available   
0.00 %   
37
Uses
Uses & Benefits
  • Currently known uses of Nobelium metal are limited to research purpose only.
  
  • 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
NA   
Automobile Industry, Chemical Industry   
Medical Uses
NA   
NA   
Other Uses
Research Purposes   
Alloys   
Biological Properties
  
  
Toxicity
Unknown   
Highly Toxic   
Present in Human Body
No   
No   
In Blood
0.00 Blood/mg dm-3   
37
Not Available   
In Bone
0.00 p.p.m.   
36
Not Available   
Physical Properties
Melting Point
827.00 °C   
99+
824.00 °C   
99+
Boiling Point
Not Available   
1,196.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Unknown   
Silvery White   
Luster
Unknown Luster   
Metallic   
Hardness
  
  
Brinell Hardness
Not Available   
343.00 MPa   
31
Vickers Hardness
Not Available   
206.00 MPa   
33
Speed of Sound
Not Available   
1,590.00 m/s   
99+
Optical Properties
  
  
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
No   
Yb   
Isotopes
  
  
Known Isotopes
13   
26
30   
9
Electronegativity
  
  
Pauling Electronegativity
1.30   
32
Not Available   
Allred Rochow Electronegativity
1.20   
27
1.06   
33
Electropositivity
  
  
Pauling Electropositivity
2.70   
22
Not Available   
Ionization Energies
  
  
1st Energy Level
642.00 kJ/mol   
99+
603.40 kJ/mol   
99+
2nd Energy Level
1,254.00 kJ/mol   
99+
1,174.80 kJ/mol   
99+
3rd Energy Level
2,643.00 kJ/mol   
99+
2,417.00 kJ/mol   
99+
4th Energy Level
3,956.00 kJ/mol   
39
4,203.00 kJ/mol   
31
Electrochemical Equivalent
4.83 g/amp-hr   
4
2.15 g/amp-hr   
25
Electron Work Function
Not Available   
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
102   
16
70   
99+
Electron Configuration
[Rn] 5f14 7s2   
[Xe] 4f14 6s2   
Crystal Structure
Not Known   
Face Centered Cubic (FCC)   
Crystal Lattice
Unknown-Crystal-Structure-of-Nobelium.jpg#100   
FCC-Crystal-Structure-of-Ytterbium.jpg#100   
Atom
  
  
Number of Protons
102   
16
70   
99+
Number of Neutrons
157   
7
103   
31
Number of Electrons
102   
16
70   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
176.00 pm   
18
Covalent Radius
Not Available   
187.00 pm   
20
Van der Waals Radius
246.00 pm   
8
242.00 pm   
12
Atomic Weight
259.00 amu   
13
173.05 amu   
99+
Atomic Volume
Not Available   
24.79 cm3/mol   
9
Adjacent Atomic Numbers
  
  
Previous Element
Mendelevium
  
Thulium
  
Next Element
Lawrencium
  
Lutetium
  
Valence Electron Potential
26.00 (-eV)   
99+
50.30 (-eV)   
27
Lattice Constant
Not Available   
548.47 pm   
11
Lattice Angles
NA   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
Mechanical Properties
Density
  
  
Density At Room Temperature
Not Available   
6.90 g/cm3   
99+
Density When Liquid (at m.p.)
Not Available   
6.21 g/cm3   
99+
Tensile Strength
Not Available   
58.00 MPa   
18
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Elasticity properties
  
  
Shear Modulus
Not Available   
9.90 GPa   
99+
Bulk Modulus
Not Available   
30.50 GPa   
39
Young's Modulus
Not Available   
23.90 GPa   
99+
Poisson Ratio
Not Available   
0.21   
33
Other Mechanical Properties
Unknown   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available   
6.97   
99+
Magnetic Ordering
Unknown   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Unknown   
Conductor   
Resistivity
Not Available   
0.25 nΩ·m   
99+
Electrical Conductivity
Not Available   
0.04 106/cm Ω   
38
Electron Affinity
Not Available   
50.00 kJ/mol   
21
Thermal Properties
Specific Heat
Not Available   
0.15 J/(kg K)   
36
Molar Heat Capacity
Not Available   
26.74 J/mol·K   
25
Thermal Conductivity
Not Available   
38.50 W/m·K   
35
Critical Temperature
Not Available   
26.30 K   
7
Thermal Expansion
Not Available   
26.30 µm/(m·K)   
14
Enthalpy
  
  
Enthalpy of Vaporization
Not Available   
128.90 kJ/mol   
99+
Enthalpy of Fusion
Not Available   
7.66 kJ/mol   
99+
Enthalpy of Atomization
Not Available   
180.00 kJ/mol   
99+
Standard Molar Entropy
Not Available   
59.90 J/mol.K   
21
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