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Seaborgium Fermium Comparison

Seaborgium
Fermium
Fermium Seaborgium comparison


Periodic Table
Symbol
Sg  
Fm  
Group Number
6  
12
3  
15
Period Number
7  
7  
Block
d block  
f block  
Element Family
Transition Metal  
Actinide  
CAS Number
54038812  
9
7440724  
19
Space Group Name
-  
-  
Space Group Number
166.00  
9
194.00  
7
Facts
Interesting Facts
  • Seaborgium most stable isotope is Sg and it has 2.1 min of half- life.
  • And other isotopes of Seaborgium have half-lives as short as 3 ms.
  
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  
Sources
Synthetically Produced  
Bombarding Pu-239 with Neutrons  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
Lawrence Berkeley National Laboratory  
Discovery
In 1974  
In 1952  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
35
Abundance In Sun
-  
0.00 %  
30
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
-  
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
-  
-  
Uses
Uses & Benefits
  • Currently known uses of Seaborgium metal are limited to research purpose only.
  
  • Currently known uses of Fermium metal are limited to research purpose only.
  
Industrial Uses
-  
-  
Medical Uses
-  
-  
Other Uses
Research Purposes  
-  
Biological Properties
  
  
Toxicity
-  
-  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
27
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
-  
1,527.00 °C  
26
Boiling Point
0.00 °C  
99+
0.00 °C  
99+
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
-  
Luster
Unknown Luster  
-  
Hardness
  
  
Mohs Hardness
6.00  
6
6.00  
6
Brinell Hardness
400.00 MPa  
34
500.00 MPa  
28
Vickers Hardness
520.00 MPa  
33
600.00 MPa  
28
Speed of Sound
3,200.00 m/s  
35
2,500.00 m/s  
99+
Optical Properties
  
  
Refractive Index
1.30  
99+
1.30  
99+
Reflectivity
68.00 %  
15
59.00 %  
24
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Sg  
Fm  
Isotopes
  
  
Known Isotopes
9  
29
18  
21
Electronegativity
  
  
Pauling Electronegativity
0.00  
99+
1.30  
33
Sanderson Electronegativity
1.90  
13
1.30  
25
Allred Rochow Electronegativity
1.30  
25
1.20  
28
Mulliken-Jaffe Electronegativity
1.30  
33
1.30  
33
Allen Electronegativity
1.90  
8
1.30  
40
Electropositivity
  
  
Pauling Electropositivity
2.20  
39
2.70  
22
Ionization Energies
  
  
1st Energy Level
757.40 kJ/mol  
21
627.00 kJ/mol  
99+
2nd Energy Level
1,732.90 kJ/mol  
29
1,225.00 kJ/mol  
99+
3rd Energy Level
2,483.50 kJ/mol  
99+
2,363.00 kJ/mol  
99+
4th Energy Level
3,415.60 kJ/mol  
99+
3,792.00 kJ/mol  
99+
5th Energy Level
4,561.80 kJ/mol  
99+
6,270.00 kJ/mol  
39
6th Energy Level
5,715.80 kJ/mol  
99+
6,270.00 kJ/mol  
99+
7th Energy level
5,700.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
8th Energy Level
5,700.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
9th Energy Level
5,710.00 kJ/mol  
99+
7,040.00 kJ/mol  
33
10th Energy Level
6,270.00 kJ/mol  
99+
6,270.00 kJ/mol  
99+
11th Energy Level
6,600.00 kJ/mol  
39
6,270.00 kJ/mol  
99+
12th Energy Level
971.00 kJ/mol  
99+
62,700.00 kJ/mol  
10
13th Energy Level
5,700.00 kJ/mol  
99+
6,270.00 kJ/mol  
38
14th Energy Level
5,700.00 kJ/mol  
99+
6,270.00 kJ/mol  
27
15th Energy Level
54,000.00 kJ/mol  
99+
62,700.00 kJ/mol  
38
16th Energy Level
64,000.00 kJ/mol  
27
62,700.00 kJ/mol  
28
17th Energy Level
579.80 kJ/mol  
99+
627.00 kJ/mol  
99+
18th Energy Level
3,300.00 kJ/mol  
99+
6,270.00 kJ/mol  
40
19th Energy Level
579.80 kJ/mol  
99+
994.80 kJ/mol  
21
20th Energy Level
579.00 kJ/mol  
99+
627.00 kJ/mol  
99+
21st Energy Level
6,270.00 kJ/mol  
14
627.00 kJ/mol  
99+
22nd Energy Level
573.00 kJ/mol  
99+
345.00 kJ/mol  
99+
23rd Energy Level
5,790.00 kJ/mol  
22
6,270.00 kJ/mol  
14
24th Energy Level
971.00 kJ/mol  
4
627.60 kJ/mol  
38
25th Energy Level
0.00 kJ/mol  
99+
627.00 kJ/mol  
40
26th Energy Level
579.10 kJ/mol  
99+
627.60 kJ/mol  
39
27th Energy Level
870.00 kJ/mol  
7
627.60 kJ/mol  
99+
28th Energy Level
870.00 kJ/mol  
10
627.60 kJ/mol  
99+
29th Energy Level
761.90 kJ/mol  
21
627.60 kJ/mol  
99+
30th Energy Level
0.00 kJ/mol  
99+
627.60 kJ/mol  
99+
Electrochemical Equivalent
3.20 g/amp-hr  
14
3.20 g/amp-hr  
15
Electron Work Function
6.00 eV  
1
4.47 eV  
21
Other Chemical Properties
-  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
106  
12
100  
18
Electron Configuration
[Rn] 5f14 6d2 7s2  
[Rn] 5f12 7s2  
Crystal Structure
Body Centered Cubic (BCC)  
Not Known  
Crystal Lattice
BCC-Crystal-Structure-.jpg#100  
Unknown-Crystal-Structure-of-Fermium.jpg#100  
Atom
  
  
Number of Protons
106  
12
100  
18
Number of Neutrons
157  
8
157  
8
Number of Electrons
106  
12
100  
18
Radius of an Atom
  
  
Atomic Radius
132.00 pm  
99+
180.00 pm  
16
Covalent Radius
143.00 pm  
99+
180.00 pm  
23
Van der Waals Radius
230.00 pm  
24
245.00 pm  
13
Atomic Weight
269.00 amu  
9
257.00 amu  
15
Atomic Volume
35.00 cm3/mol  
8
18.00 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Dubnium
  
Einsteinium
  
Next Element
Bohrium
  
Mendelevium
  
Valence Electron Potential
6.10 (-eV)  
99+
0.00 (-eV)  
99+
Lattice Constant
-  
350.00 pm  
99+
Lattice Angles
-  
-  
Lattice C/A Ratio
1.36  
99+
1.63  
13
Mechanical
Density
  
  
Density At Room Temperature
35.00 g/cm3  
4
9.70 g/cm3  
99+
Density When Liquid (at m.p.)
35.00 g/cm3  
4
9.70 g/cm3  
99+
Tensile Strength
30.00 MPa  
99+
0.10 MPa  
99+
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
22
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.00 (Pa)  
30
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
30.00 GPa  
27
Bulk Modulus
0.00 GPa  
99+
50.00 GPa  
24
Young's Modulus
12.60 GPa  
99+
0.00 GPa  
99+
Poisson Ratio
0.25  
24
0.35  
9
Other Mechanical Properties
-  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
35.00  
6
9.70  
99+
Magnetic Ordering
-  
-  
Permeability
0.00 H/m  
7
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
-  
-  
Resistivity
0.38 nΩ·m  
99+
7.90 nΩ·m  
99+
Electrical Conductivity
0.00 106/cm Ω  
99+
0.00 106/cm Ω  
99+
Electron Affinity
50.00 kJ/mol  
26
0.00 kJ/mol  
99+
Thermal
Specific Heat
0.27 J/(kg K)  
19
0.10 J/(kg K)  
99+
Molar Heat Capacity
35.00 J/mol·K  
5
27.00 J/mol·K  
29
Thermal Conductivity
0.14 W/m·K  
99+
0.00 W/m·K  
99+
Critical Temperature
1,200.00 K  
99+
1,323.00 K  
99+
Thermal Expansion
11.00 µm/(m·K)  
99+
11.00 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
585.00 kJ/mol  
10
319.20 kJ/mol  
99+
Enthalpy of Fusion
-  
13.30 kJ/mol  
30
Enthalpy of Atomization
650.00 kJ/mol  
8
-  
Standard Molar Entropy
42.70 J/mol.K  
99+
50.00 J/mol.K  
99+
Summary >>
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