Uranium Ytterbium Comparison
Periodic Table
Symbol
U
Yb
Group Number
0
18
Not Available
Period Number
7
6
Block
f block
f block
Element Family
Actinide
Lanthanide
CAS Number
7440611
28
7440644
26
Space Group Name
Cmcm
Fm_ 3m
Space Group Number
63.00
10
225.00
2
Facts
Interesting Facts
- Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
- Ytterbium metal oxidizes rapidly if exposed to air.
- Ytterbium metal can dissolve quickly in Mineral acid.
Sources
Earth's crust, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of Minerals
History
Who Discovered
Not Available
Jean Charles Galissard de Marignac
Discovery
In 1789
In 1878
Abundance
Abundance In Universe
2 * 10-8 %
29
2 * 10-7 %
22
Abundance In Sun
~0.0000001 %
26
~0.0000001 %
26
Abundance In Meteorites
0.00 %
99+
0.00 %
36
Abundance In Earth's Crust
0.00 %
36
0.00 %
33
Abundance In Oceans
0.00 %
11
0.00 %
37
Uses
Uses & Benefits
- The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
- Synthetic elements like transuranium are made from Uranium metal.
- 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
Ammunition Industry, Chemical Industry
Automobile Industry, Chemical Industry
Medical Uses
NA
NA
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues
Alloys
Biological Properties
Toxicity
Toxic
Highly Toxic
Present in Human Body
No
No
Physical Properties
Melting Point
1,132.00 °C
39
824.00 °C
99+
Boiling Point
3,818.00 °C
16
1,196.00 °C
99+
Appearance
Physical State
Solid
Solid
Color
Silvery Gray
Silvery White
Luster
Metallic
Metallic
Hardness
Mohs Hardness
6.00
6
Not Available
Brinell Hardness
2,350.00 MPa
2
343.00 MPa
31
Vickers Hardness
1,960.00 MPa
2
206.00 MPa
33
Speed of Sound
3,155.00 m/s
25
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
U
Yb
Isotopes
Known Isotopes
25
14
30
9
Electronegativity
Pauling Electronegativity
1.38
28
Not Available
Allred Rochow Electronegativity
1.22
26
1.06
33
Electropositivity
Pauling Electropositivity
2.62
26
Not Available
Ionization Energies
1st Energy Level
597.60 kJ/mol
99+
603.40 kJ/mol
99+
2nd Energy Level
1,420.00 kJ/mol
99+
1,174.80 kJ/mol
99+
3rd Energy Level
1,900.00 kJ/mol
99+
2,417.00 kJ/mol
99+
4th Energy Level
3,145.00 kJ/mol
99+
4,203.00 kJ/mol
31
Electrochemical Equivalent
1.48 g/amp-hr
99+
2.15 g/amp-hr
25
Electron Work Function
3.63 eV
30
Not Available
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity
Ionization, Radioactive Isotopes, Solubility
Atomic Properties
Atomic Number
92
26
70
99+
Electron Configuration
[Rn] 5f3 6d1 7s2
[Xe] 4f14 6s2
Crystal Structure
Orthorhombic (ORTH)
Face Centered Cubic (FCC)
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100
FCC-Crystal-Structure-of-Ytterbium.jpg#100
Atom
Number of Protons
92
26
70
99+
Number of Neutrons
146
13
103
31
Number of Electrons
92
26
70
99+
Radius of an Atom
Atomic Radius
156.00 pm
29
176.00 pm
18
Covalent Radius
196.00 pm
14
187.00 pm
20
Van der Waals Radius
186.00 pm
33
242.00 pm
12
Atomic Weight
238.03 amu
21
173.05 amu
99+
Atomic Volume
12.59 cm3/mol
40
24.79 cm3/mol
9
Adjacent Atomic Numbers
Valence Electron Potential
170.00 (-eV)
4
50.30 (-eV)
27
Lattice Constant
295.08 pm
99+
548.47 pm
11
Lattice Angles
π/2, π/2, π/2
π/2, π/2, π/2
Lattice C/A Ratio
Not Available
Not Available
Mechanical Properties
Density
Density At Room Temperature
19.10 g/cm3
17
6.90 g/cm3
99+
Density When Liquid (at m.p.)
17.30 g/cm3
7
6.21 g/cm3
99+
Tensile Strength
Not Available
58.00 MPa
18
Viscosity
Not Available
Not Available
Vapor Pressure
Vapor Pressure at 2000 K
0.01 (Pa)
20
Not Available
Elasticity properties
Shear Modulus
111.00 GPa
10
9.90 GPa
99+
Bulk Modulus
100.00 GPa
16
30.50 GPa
39
Young's Modulus
208.00 GPa
10
23.90 GPa
99+
Poisson Ratio
0.23
30
0.21
33
Other Mechanical Properties
Ductile, Malleable
Ductile, Malleable
Magnetic Properties
Magnetic Characteristics
Specific Gravity
18.80
10
6.97
99+
Magnetic Ordering
Paramagnetic
Paramagnetic
Electrical Properties
Electrical Property
Poor Conductor
Conductor
Resistivity
0.28 nΩ·m
99+
0.25 nΩ·m
99+
Electrical Conductivity
0.04 106/cm Ω
37
0.04 106/cm Ω
38
Electron Affinity
Not Available
50.00 kJ/mol
21
Thermal Properties
Specific Heat
0.12 J/(kg K)
40
0.15 J/(kg K)
36
Molar Heat Capacity
27.67 J/mol·K
15
26.74 J/mol·K
25
Thermal Conductivity
27.50 W/m·K
40
38.50 W/m·K
35
Critical Temperature
Not Available
26.30 K
7
Thermal Expansion
13.90 µm/(m·K)
27
26.30 µm/(m·K)
14
Enthalpy
Enthalpy of Vaporization
477.00 kJ/mol
13
128.90 kJ/mol
99+
Enthalpy of Fusion
15.48 kJ/mol
19
7.66 kJ/mol
99+
Enthalpy of Atomization
489.50 kJ/mol
14
180.00 kJ/mol
99+
Standard Molar Entropy
50.20 J/mol.K
31
59.90 J/mol.K
21
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