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Fermium vs Molybdenum

Fermium
Molybdenum
Molybdenum vs Fermium


Periodic Table
Symbol
Fm  
Mo  
Group Number
Not Available  
6  
12
Period Number
7  
5  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440724  
19
7439987  
99+
Space Group Name
Not Available  
Im_ 3m  
Space Group Number
Not Available  
229.00  
1
Facts
Interesting Facts
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  
  • 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
Bombarding Pu-239 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
Not Available  
5 * 10-7 %  
19
Abundance In Sun
~-9999 %  
~0.0000009 %  
19
Abundance In Meteorites
Not Available  
0.00 %  
24
Abundance In Earth's Crust
Not Available  
0.00 %  
39
Abundance In Oceans
Not Available  
0.00 %  
9
Abundance In Humans
Not Available  
0.00 %  
14
Uses
Uses & Benefits
  • Currently known uses of Fermium 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
NA  
Aerospace Industry, Electrical Industry, Electronic Industry  
Medical Uses
NA  
NA  
Other Uses
NA  
Alloys  
Biological Properties
  
  
Toxicity
Unknown  
Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
37
0.00 Blood/mg dm-3  
31
In Bone
0.00 p.p.m.  
36
0.70 p.p.m.  
18
Physical Properties
Melting Point
1,527.00 °C  
26
2,617.00 °C  
5
Boiling Point
Not Available  
4,612.00 °C  
9
Appearance
  
  
Physical State
Solid  
Solid  
Color
Unknown  
Gray  
Luster
Not Defined  
Metallic  
Hardness
  
  
Mohs Hardness
Not Available  
5.50  
7
Brinell Hardness
Not Available  
1,370.00 MPa  
7
Vickers Hardness
Not Available  
1,400.00 MPa  
6
Speed of Sound
Not Available  
5,400.00 m/s  
6
Optical Properties
  
  
Reflectivity
Not Available  
58.00 %  
15
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
Fm  
Mo  
Isotopes
  
  
Known Isotopes
18  
21
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.30  
32
2.16  
5
Sanderson Electronegativity
Not Available  
1.15  
19
Allred Rochow Electronegativity
1.20  
27
1.30  
24
Allen Electronegativity
Not Available  
2.16  
3
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
1.84  
99+
Ionization Energies
  
  
1st Energy Level
627.00 kJ/mol  
99+
684.30 kJ/mol  
37
2nd Energy Level
1,225.00 kJ/mol  
99+
1,560.00 kJ/mol  
37
3rd Energy Level
2,363.00 kJ/mol  
99+
2,618.00 kJ/mol  
99+
4th Energy Level
3,792.00 kJ/mol  
99+
4,480.00 kJ/mol  
26
5th Energy Level
Not Available  
5,257.00 kJ/mol  
32
6th Energy Level
Not Available  
6,640.80 kJ/mol  
22
7th Energy level
Not Available  
12,125.00 kJ/mol  
13
8th Energy Level
Not Available  
13,860.00 kJ/mol  
16
9th Energy Level
Not Available  
15,835.00 kJ/mol  
16
10th Energy Level
Not Available  
17,980.00 kJ/mol  
18
11th Energy Level
Not Available  
20,190.00 kJ/mol  
17
12th Energy Level
Not Available  
22,219.00 kJ/mol  
15
13th Energy Level
Not Available  
26,930.00 kJ/mol  
13
14th Energy Level
Not Available  
29,196.00 kJ/mol  
13
15th Energy Level
Not Available  
52,490.00 kJ/mol  
7
16th Energy Level
Not Available  
55,000.00 kJ/mol  
8
17th Energy Level
Not Available  
61,400.00 kJ/mol  
9
18th Energy Level
Not Available  
67,700.00 kJ/mol  
9
19th Energy Level
Not Available  
74,000.00 kJ/mol  
9
20th Energy Level
Not Available  
80,400.00 kJ/mol  
10
21st Energy Level
Not Available  
87,000.00 kJ/mol  
9
22nd Energy Level
Not Available  
93,400.00 kJ/mol  
7
23rd Energy Level
Not Available  
98,420.00 kJ/mol  
6
24th Energy Level
Not Available  
104,400.00 kJ/mol  
2
25th Energy Level
Not Available  
121,900.00 kJ/mol  
1
26th Energy Level
Not Available  
127,700.00 kJ/mol  
1
27th Energy Level
Not Available  
133,800.00 kJ/mol  
1
28th Energy Level
Not Available  
139,800.00 kJ/mol  
1
29th Energy Level
Not Available  
148,100.00 kJ/mol  
1
30th Energy Level
Not Available  
154,500.00 kJ/mol  
1
Electrochemical Equivalent
3.20 g/amp-hr  
13
0.89 g/amp-hr  
99+
Electron Work Function
Not Available  
4.60 eV  
12
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes, Solubility  
Atomic Properties
Atomic Number
100  
18
42  
99+
Electron Configuration
[Rn] 5f12 7s2  
[Kr] 4d5 5s1  
Crystal Structure
Not Known  
Body Centered Cubic (BCC)  
Crystal Lattice
Unknown-Crystal-Structure-of-Fermium.jpg#100  
BCC-Crystal-Structure-.jpg#100  
Atom
  
  
Number of Protons
100  
18
42  
99+
Number of Neutrons
157  
7
54  
99+
Number of Electrons
100  
18
42  
99+
Radius of an Atom
  
  
Atomic Radius
Not Available  
139.00 pm  
39
Covalent Radius
Not Available  
154.00 pm  
32
Van der Waals Radius
245.00 pm  
9
200.00 pm  
28
Atomic Weight
257.00 amu  
15
95.95 amu  
99+
Atomic Volume
Not Available  
9.40 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Einsteinium
  
Niobium
  
Next Element
Mendelevium
  
Technetium
  
Valence Electron Potential
Not Available  
88.60 (-eV)  
13
Lattice Constant
Not Available  
314.70 pm  
99+
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  
10.28 g/cm3  
36
Density When Liquid (at m.p.)
Not Available  
9.33 g/cm3  
20
Tensile Strength
Not Available  
324.00 MPa  
13
Viscosity
Not Available  
Not Available  
Vapor Pressure
  
  
Vapor Pressure at 2000 K
Not Available  
0.00 (Pa)  
26
Elasticity properties
  
  
Shear Modulus
Not Available  
126.00 GPa  
8
Bulk Modulus
Not Available  
230.00 GPa  
6
Young's Modulus
Not Available  
329.00 GPa  
6
Poisson Ratio
Not Available  
0.31  
13
Other Mechanical Properties
NA  
Ductile, Weldable  
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
Not Available  
10.22  
27
Magnetic Ordering
Unknown  
Paramagnetic  
Electrical Properties
  
  
Electrical Property
Unknown  
Semiconductor  
Resistivity
Not Available  
53.40 nΩ·m  
99+
Electrical Conductivity
Not Available  
0.19 106/cm Ω  
11
Electron Affinity
Not Available  
71.90 kJ/mol  
14
Thermal Properties
Specific Heat
Not Available  
0.25 J/(kg K)  
21
Molar Heat Capacity
Not Available  
24.06 J/mol·K  
99+
Thermal Conductivity
Not Available  
138.00 W/m·K  
12
Critical Temperature
Not Available  
Not Available  
Thermal Expansion
Not Available  
4.80 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
Not Available  
594.10 kJ/mol  
8
Enthalpy of Fusion
Not Available  
27.61 kJ/mol  
5
Enthalpy of Atomization
Not Available  
653.00 kJ/mol  
7
Standard Molar Entropy
Not Available  
28.70 J/mol.K  
99+
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