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Chromium Ytterbium Comparison

Chromium
Ytterbium
Ytterbium Chromium comparison


Periodic Table
Symbol
Cr   
Yb   
Group Number
6   
12
Not Available   
Period Number
4   
6   
Block
d block   
f block   
Element Family
Transition Metal   
Lanthanide   
CAS Number
7440473   
39
7440644   
26
Space Group Name
Im_ 3m   
Fm_ 3m   
Space Group Number
229.00   
1
225.00   
2
Facts
Interesting Facts
  • Chromium is highly reactive, hence it is not found free in nature.
  • Ores of Chromites mineral are the major source of Chromium metal.
  • Almost 90% leather tanning is done with the help of chromium.
  
  • Ytterbium metal oxidizes rapidly if exposed to air.
  • Ytterbium metal can dissolve quickly in Mineral acid.
  
Sources
Found in Minerals, Mining, Ores of metals, Ores of Minerals   
Found in Minerals, Mining, Ores of Minerals   
History
  
  
Who Discovered
Louis Nicolas Vauquelin   
Jean Charles Galissard de Marignac   
Discovery
In Between 1797 - 1798   
In 1878   
Abundance
  
  
Abundance In Universe
1.5 * 10-3 %   
7
2 * 10-7 %   
22
Abundance In Sun
~0.002 %   
7
~0.0000001 %   
26
Abundance In Meteorites
0.30 %   
7
0.00 %   
36
Abundance In Earth's Crust
0.01 %   
13
0.00 %   
33
Abundance In Oceans
0.00 %   
16
0.00 %   
37
Abundance In Humans
0.00 %   
16
Not Available   
Uses
Uses & Benefits
  • It is used to harden the steel and produces a stainless steel and other various alloys.
  • It is also used to give proper finish to polished mirrors. Its chromium plates are used in bathroom fittings.
  
  • 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
Automobile Industry, Chemical Industry   
Automobile Industry, Chemical Industry   
Medical Uses
NA   
NA   
Other Uses
Alloys   
Alloys   
Biological Properties
  
  
Toxicity
Highly Toxic   
Highly Toxic   
Present in Human Body
Yes   
No   
In Blood
0.11 Blood/mg dm-3   
12
Not Available   
In Bone
0.33 p.p.m.   
21
Not Available   
Physical Properties
Melting Point
1,857.00 °C   
14
824.00 °C   
99+
Boiling Point
2,672.00 °C   
39
1,196.00 °C   
99+
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silver   
Silvery White   
Luster
Metallic   
Metallic   
Hardness
  
  
Mohs Hardness
8.50   
1
Not Available   
Brinell Hardness
687.00 MPa   
16
343.00 MPa   
31
Vickers Hardness
1,060.00 MPa   
10
206.00 MPa   
33
Speed of Sound
5,940.00 m/s   
5
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
Cr   
Yb   
Isotopes
  
  
Known Isotopes
21   
18
30   
9
Electronegativity
  
  
Pauling Electronegativity
1.66   
18
Not Available   
Sanderson Electronegativity
1.66   
14
Not Available   
Allred Rochow Electronegativity
1.56   
10
1.06   
33
Allen Electronegativity
1.65   
19
Not Available   
Electropositivity
  
  
Pauling Electropositivity
2.34   
36
Not Available   
Ionization Energies
  
  
1st Energy Level
26,130.00 kJ/mol   
1
603.40 kJ/mol   
99+
2nd Energy Level
28,750.00 kJ/mol   
1
1,174.80 kJ/mol   
99+
3rd Energy Level
34,230.00 kJ/mol   
1
2,417.00 kJ/mol   
99+
4th Energy Level
37,066.00 kJ/mol   
1
4,203.00 kJ/mol   
31
5th Energy Level
97,510.00 kJ/mol   
1
Not Available   
6th Energy Level
105,800.00 kJ/mol   
1
Not Available   
7th Energy level
114,300.00 kJ/mol   
1
Not Available   
8th Energy Level
125,300.00 kJ/mol   
1
Not Available   
9th Energy Level
134,700.00 kJ/mol   
1
Not Available   
10th Energy Level
144,300.00 kJ/mol   
1
Not Available   
11th Energy Level
26,130.00 kJ/mol   
12
Not Available   
12th Energy Level
28,750.00 kJ/mol   
13
Not Available   
13th Energy Level
34,230.00 kJ/mol   
10
Not Available   
14th Energy Level
37,066.00 kJ/mol   
12
Not Available   
15th Energy Level
97,510.00 kJ/mol   
1
Not Available   
16th Energy Level
105,800.00 kJ/mol   
2
Not Available   
17th Energy Level
114,300.00 kJ/mol   
3
Not Available   
18th Energy Level
125,300.00 kJ/mol   
4
Not Available   
19th Energy Level
134,700.00 kJ/mol   
5
Not Available   
20th Energy Level
144,300.00 kJ/mol   
7
Not Available   
21st Energy Level
157,700.00 kJ/mol   
7
Not Available   
22nd Energy Level
166,090.00 kJ/mol   
6
Not Available   
Electrochemical Equivalent
0.32 g/amp-hr   
99+
2.15 g/amp-hr   
25
Electron Work Function
4.50 eV   
14
Not Available   
Other Chemical Properties
Anti Corrosion, Chemical Stability, Ionization, Radioactive Isotopes, Solubility   
Ionization, Radioactive Isotopes, Solubility   
Atomic Properties
Atomic Number
24   
99+
70   
99+
Electron Configuration
[Ar] 3d5 4s1   
[Xe] 4f14 6s2   
Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Ytterbium.jpg#100   
Atom
  
  
Number of Protons
24   
99+
70   
99+
Number of Neutrons
28   
99+
103   
31
Number of Electrons
24   
99+
70   
99+
Radius of an Atom
  
  
Atomic Radius
128.00 pm   
99+
176.00 pm   
18
Covalent Radius
139.00 pm   
99+
187.00 pm   
20
Van der Waals Radius
200.00 pm   
28
242.00 pm   
12
Atomic Weight
52.00 amu   
99+
173.05 amu   
99+
Atomic Volume
7.23 cm3/mol   
99+
24.79 cm3/mol   
9
Adjacent Atomic Numbers
  
  
Previous Element
Vanadium
  
Thulium
  
Next Element
Manganese
  
Lutetium
  
Valence Electron Potential
170.00 (-eV)   
4
50.30 (-eV)   
27
Lattice Constant
291.00 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
7.19 g/cm3   
99+
6.90 g/cm3   
99+
Density When Liquid (at m.p.)
6.30 g/cm3   
40
6.21 g/cm3   
99+
Tensile Strength
689.00 MPa   
7
58.00 MPa   
18
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)   
24
Not Available   
Vapor Pressure at 2000 K
774.00 (Pa)   
1
Not Available   
Elasticity properties
  
  
Shear Modulus
115.00 GPa   
9
9.90 GPa   
99+
Bulk Modulus
160.00 GPa   
11
30.50 GPa   
39
Young's Modulus
279.00 GPa   
8
23.90 GPa   
99+
Poisson Ratio
0.21   
32
0.21   
33
Other Mechanical Properties
NA   
Ductile, Malleable   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
7.19   
99+
6.97   
99+
Magnetic Ordering
Antiferromagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
NA   
Conductor   
Resistivity
125.00 nΩ·m   
27
0.25 nΩ·m   
99+
Electrical Conductivity
0.08 106/cm Ω   
25
0.04 106/cm Ω   
38
Electron Affinity
64.30 kJ/mol   
15
50.00 kJ/mol   
21
Thermal Properties
Specific Heat
0.45 J/(kg K)   
12
0.15 J/(kg K)   
36
Molar Heat Capacity
23.35 J/mol·K   
99+
26.74 J/mol·K   
25
Thermal Conductivity
93.90 W/m·K   
17
38.50 W/m·K   
35
Critical Temperature
Not Available   
26.30 K   
7
Thermal Expansion
4.90 µm/(m·K)   
99+
26.30 µm/(m·K)   
14
Enthalpy
  
  
Enthalpy of Vaporization
348.80 kJ/mol   
24
128.90 kJ/mol   
99+
Enthalpy of Fusion
15.31 kJ/mol   
20
7.66 kJ/mol   
99+
Enthalpy of Atomization
397.50 kJ/mol   
21
180.00 kJ/mol   
99+
Standard Molar Entropy
23.80 J/mol.K   
99+
59.90 J/mol.K   
21
Summary >>
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