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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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