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Einsteinium vs Molybdenum

Einsteinium
Molybdenum
Molybdenum vs Einsteinium


Periodic Table
Symbol
Es  
Mo  
Group Number
13  
5
6  
12
Period Number
7  
5  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7429927  
99+
7439987  
99+
Space Group Name
-  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Einsteinium is the transuranic element found in US.
  • Only 0.01 mg of Einsteinium was synthesized in 1961.
  
  • Molybdenum is highly reactive metal, hence not found free in nature .
  • Till 18th century Molybdenum element were often mistaken as a carbon or Lead.
  
Sources
Made by Bombarding Uranium with Neutrons  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
Carl Wilhelm Scheele  
Discovery
In 1952  
In 1778  
Abundance
  
  
Abundance In Universe
0.00 %  
35
0.00 %  
20
Abundance In Sun
0.00 %  
30
0.00 %  
19
Abundance In Meteorites
0.00 %  
99+
0.00 %  
24
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
39
Abundance In Oceans
-  
0.00 %  
9
Abundance In Humans
0.00 %  
24
0.00 %  
17
Uses
Uses & Benefits
  • Currently known uses of Einsteinium metal are limited to research purpose only.
  
  • Its alloys are used to make engine parts, drills, saw blade, etc.
  • Lubricant additive made up of Molybdenum disulfide is commonly used in the industry. It is also used as a catalyst.
  
Industrial Uses
-  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys  
Biological Properties
  
  
Toxicity
Toxic  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
31
In Bone
0.00 p.p.m.  
99+
0.70 p.p.m.  
20
Physical
Melting Point
860.00 °C  
99+
2,617.00 °C  
5
Boiling Point
996.00 °C  
99+
4,612.00 °C  
9
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silver  
Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
5.50  
7
Brinell Hardness
240.00 MPa  
99+
1,370.00 MPa  
7
Vickers Hardness
550.00 MPa  
31
1,400.00 MPa  
11
Speed of Sound
2,850.00 m/s  
40
5,400.00 m/s  
9
Optical Properties
  
  
Refractive Index
1.30  
99+
2.00  
15
Reflectivity
63.00 %  
20
58.00 %  
25
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Es  
Mo  
Isotopes
  
  
Known Isotopes
16  
23
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.54  
27
2.16  
6
Sanderson Electronegativity
1.30  
25
1.15  
34
Allred Rochow Electronegativity
1.20  
28
1.30  
25
Mulliken-Jaffe Electronegativity
1.30  
33
2.16  
7
Allen Electronegativity
1.30  
40
2.16  
3
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
1.84  
99+
Ionization Energies
  
  
1st Energy Level
619.00 kJ/mol  
99+
684.30 kJ/mol  
37
2nd Energy Level
1,216.00 kJ/mol  
99+
1,560.00 kJ/mol  
38
3rd Energy Level
2,334.00 kJ/mol  
99+
2,618.00 kJ/mol  
99+
4th Energy Level
3,734.00 kJ/mol  
99+
4,480.00 kJ/mol  
36
5th Energy Level
6,190.00 kJ/mol  
40
5,257.00 kJ/mol  
99+
6th Energy Level
6,190.00 kJ/mol  
99+
6,640.80 kJ/mol  
99+
7th Energy level
6,190.00 kJ/mol  
99+
12,125.00 kJ/mol  
13
8th Energy Level
6,190.00 kJ/mol  
99+
13,860.00 kJ/mol  
16
9th Energy Level
4,520.00 kJ/mol  
99+
15,835.00 kJ/mol  
16
10th Energy Level
6,190.00 kJ/mol  
99+
17,980.00 kJ/mol  
18
11th Energy Level
6,190.00 kJ/mol  
99+
20,190.00 kJ/mol  
17
12th Energy Level
61,900.00 kJ/mol  
12
22,219.00 kJ/mol  
38
13th Energy Level
6,190.00 kJ/mol  
39
26,930.00 kJ/mol  
13
14th Energy Level
6,190.00 kJ/mol  
28
29,196.00 kJ/mol  
13
15th Energy Level
61,900.00 kJ/mol  
40
52,490.00 kJ/mol  
99+
16th Energy Level
61,900.00 kJ/mol  
30
55,000.00 kJ/mol  
99+
17th Energy Level
619.00 kJ/mol  
99+
61,400.00 kJ/mol  
9
18th Energy Level
6,190.00 kJ/mol  
99+
67,700.00 kJ/mol  
9
19th Energy Level
619.00 kJ/mol  
99+
74,000.00 kJ/mol  
9
20th Energy Level
619.00 kJ/mol  
99+
80,400.00 kJ/mol  
10
21st Energy Level
6,190.00 kJ/mol  
15
87,000.00 kJ/mol  
9
22nd Energy Level
619.00 kJ/mol  
38
93,400.00 kJ/mol  
7
23rd Energy Level
6,190.00 kJ/mol  
15
98,420.00 kJ/mol  
6
24th Energy Level
619.40 kJ/mol  
40
104,400.00 kJ/mol  
2
25th Energy Level
619.00 kJ/mol  
99+
121,900.00 kJ/mol  
1
26th Energy Level
619.40 kJ/mol  
40
127,700.00 kJ/mol  
1
27th Energy Level
619.40 kJ/mol  
99+
133,800.00 kJ/mol  
1
28th Energy Level
619.40 kJ/mol  
99+
139,800.00 kJ/mol  
1
29th Energy Level
619.40 kJ/mol  
99+
148,100.00 kJ/mol  
1
30th Energy Level
619.40 kJ/mol  
99+
154,500.00 kJ/mol  
1
Electrochemical Equivalent
4.74 g/amp-hr  
5
0.89 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
4.60 eV  
17
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic
Atomic Number
99  
19
42  
99+
Electron Configuration
[Rn] 5f11 7s2  
[Kr] 4d5 5s1  
Crystal Structure
Face Centered Cubic (FCC)  
Body Centered Cubic (BCC)  
Crystal Lattice
FCC-Crystal-Structure-of-Einsteinium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
99  
19
42  
99+
Number of Neutrons
153  
10
54  
99+
Number of Electrons
99  
19
42  
99+
Radius of an Atom
  
  
Atomic Radius
186.00 pm  
11
139.00 pm  
99+
Covalent Radius
186.00 pm  
21
154.00 pm  
34
Van der Waals Radius
0.00 pm  
99+
200.00 pm  
35
Atomic Weight
252.00 amu  
16
95.95 amu  
99+
Atomic Volume
17.04 cm3/mol  
99+
9.40 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Californium
  
Niobium
  
Next Element
Fermium
  
Technetium
  
Valence Electron Potential
0.00 (-eV)  
99+
88.60 (-eV)  
13
Lattice Constant
582.00 pm  
8
314.70 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.29  
99+
1.03  
99+
Mechanical
Density
  
  
Density At Room Temperature
8.84 g/cm3  
99+
10.28 g/cm3  
39
Density When Liquid (at m.p.)
8.84 g/cm3  
99+
9.33 g/cm3  
99+
Tensile Strength
0.10 MPa  
99+
324.00 MPa  
15
Viscosity
0.00  
25
0.00  
5
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
24
0.00 (Pa)  
27
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
126.00 GPa  
8
Bulk Modulus
40.00 GPa  
38
230.00 GPa  
6
Young's Modulus
0.00 GPa  
99+
329.00 GPa  
6
Poisson Ratio
0.33  
11
0.31  
13
Other Mechanical Properties
-  
Ductile, Weldable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
8.84  
99+
10.22  
40
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
9
Susceptibility
0.00  
24
0.00  
29
Electrical Properties
  
  
Electrical Property
-  
Semiconductor  
Resistivity
6.30 nΩ·m  
99+
53.40 nΩ·m  
99+
Electrical Conductivity
0.14 106/cm Ω  
15
0.19 106/cm Ω  
11
Electron Affinity
0.00 kJ/mol  
99+
71.90 kJ/mol  
16
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.25 J/(kg K)  
21
Molar Heat Capacity
27.20 J/mol·K  
24
24.06 J/mol·K  
99+
Thermal Conductivity
0.00 W/m·K  
99+
138.00 W/m·K  
12
Critical Temperature
1,133.00 K  
99+
2,896.00 K  
6
Thermal Expansion
13.50 µm/(m·K)  
33
4.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
323.80 kJ/mol  
99+
594.10 kJ/mol  
9
Enthalpy of Fusion
14.80 kJ/mol  
24
27.61 kJ/mol  
5
Enthalpy of Atomization
-  
653.00 kJ/mol  
7
Standard Molar Entropy
63.00 J/mol.K  
24
28.70 J/mol.K  
99+
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