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Fermium vs Tantalum

Fermium
Tantalum
Tantalum vs Fermium


Periodic Table
Symbol
Fm  
Ta  
Group Number
3  
15
5  
13
Period Number
7  
6  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440724  
19
7440257  
99+
Space Group Name
-  
Im_ 3m  
Space Group Number
194.00  
7
229.00  
2
Facts
Interesting Facts
  • Fermium metal is highly radioactive in nature.
  • Fermium is synthetically produced metal.
  
  • Tantalum metal is known as corrosion resistance.
  • Tantalum metal can easily fabricated and It is a good conductor of heat and electricity.
  
Sources
Bombarding Pu-239 with Neutrons  
Found in Minerals, Mining, Ores of Minerals  
History
  
  
Who Discovered
Lawrence Berkeley National Laboratory  
Anders Gustaf Ekeberg  
Discovery
In 1952  
In 1802  
Abundance
  
  
Abundance In Universe
0.00 %  
35
0.00 %  
32
Abundance In Sun
0.00 %  
30
0.00 %  
18
Abundance In Meteorites
0.00 %  
99+
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
37
Abundance In Oceans
-  
0.00 %  
31
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Currently known uses of Fermium metal are limited to research purpose only.
  
  • Tantalum metal is mainly used in the manufacturing of electron components. Its Oxide layer acts as an insulator.
  • Tantalum metal is also used in surgical transplant like replacement of bone, skull plates and as a woven gauze.
  
Industrial Uses
-  
Electrical Industry, Electronic Industry  
Medical Uses
-  
-  
Other Uses
-  
Alloys  
Biological Properties
  
  
Toxicity
-  
Low Toxic  
Present in Human Body
No  
Yes  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
0.03 p.p.m.  
33
Physical
Melting Point
1,527.00 °C  
26
2,996.00 °C  
4
Boiling Point
0.00 °C  
99+
5,425.00 °C  
4
Appearance
  
  
Physical State
Solid  
Solid  
Color
-  
Gray Blue  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
6.00  
6
6.50  
5
Brinell Hardness
500.00 MPa  
28
440.00 MPa  
33
Vickers Hardness
600.00 MPa  
28
870.00 MPa  
19
Speed of Sound
2,500.00 m/s  
99+
3,400.00 m/s  
33
Optical Properties
  
  
Refractive Index
1.30  
99+
2.15  
10
Reflectivity
59.00 %  
24
78.00 %  
8
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Fm  
Ta  
Isotopes
  
  
Known Isotopes
18  
21
31  
8
Electronegativity
  
  
Pauling Electronegativity
1.30  
33
1.50  
28
Sanderson Electronegativity
1.30  
25
1.50  
18
Allred Rochow Electronegativity
1.20  
28
1.33  
23
Mulliken-Jaffe Electronegativity
1.30  
33
1.50  
26
Allen Electronegativity
1.30  
40
1.34  
38
Electropositivity
  
  
Pauling Electropositivity
2.70  
22
2.50  
27
Ionization Energies
  
  
1st Energy Level
627.00 kJ/mol  
99+
761.00 kJ/mol  
18
2nd Energy Level
1,225.00 kJ/mol  
99+
1,500.00 kJ/mol  
99+
3rd Energy Level
2,363.00 kJ/mol  
99+
761.00 kJ/mol  
99+
4th Energy Level
3,792.00 kJ/mol  
99+
7,610.00 kJ/mol  
9
5th Energy Level
6,270.00 kJ/mol  
39
7,610.00 kJ/mol  
19
6th Energy Level
6,270.00 kJ/mol  
99+
7,610.00 kJ/mol  
36
7th Energy level
6,270.00 kJ/mol  
99+
7,610.00 kJ/mol  
30
8th Energy Level
6,270.00 kJ/mol  
99+
7,610.00 kJ/mol  
30
9th Energy Level
7,040.00 kJ/mol  
33
7,610.00 kJ/mol  
26
10th Energy Level
6,270.00 kJ/mol  
99+
7,610.00 kJ/mol  
30
11th Energy Level
6,270.00 kJ/mol  
99+
7,610.00 kJ/mol  
29
12th Energy Level
62,700.00 kJ/mol  
10
7,610.00 kJ/mol  
99+
13th Energy Level
6,270.00 kJ/mol  
38
7,610.00 kJ/mol  
22
14th Energy Level
6,270.00 kJ/mol  
27
7,610.00 kJ/mol  
19
15th Energy Level
62,700.00 kJ/mol  
38
76,100.00 kJ/mol  
19
16th Energy Level
62,700.00 kJ/mol  
28
76,100.00 kJ/mol  
14
17th Energy Level
627.00 kJ/mol  
99+
761.00 kJ/mol  
35
18th Energy Level
6,270.00 kJ/mol  
40
7,610.00 kJ/mol  
25
19th Energy Level
994.80 kJ/mol  
21
761.00 kJ/mol  
32
20th Energy Level
627.00 kJ/mol  
99+
761.00 kJ/mol  
26
21st Energy Level
627.00 kJ/mol  
99+
761.00 kJ/mol  
99+
22nd Energy Level
345.00 kJ/mol  
99+
761.00 kJ/mol  
20
23rd Energy Level
6,270.00 kJ/mol  
14
761.00 kJ/mol  
99+
24th Energy Level
627.60 kJ/mol  
38
761.00 kJ/mol  
16
25th Energy Level
627.00 kJ/mol  
40
761.00 kJ/mol  
16
26th Energy Level
627.60 kJ/mol  
39
761.00 kJ/mol  
16
27th Energy Level
627.60 kJ/mol  
99+
761.00 kJ/mol  
15
28th Energy Level
627.60 kJ/mol  
99+
761.00 kJ/mol  
21
29th Energy Level
627.60 kJ/mol  
99+
761.00 kJ/mol  
22
30th Energy Level
627.60 kJ/mol  
99+
761.00 kJ/mol  
16
Electrochemical Equivalent
3.20 g/amp-hr  
15
1.35 g/amp-hr  
99+
Electron Work Function
4.47 eV  
21
4.25 eV  
28
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
100  
18
73  
99+
Electron Configuration
[Rn] 5f12 7s2  
[Xe] 4f14 5d3 6s2  
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
73  
99+
Number of Neutrons
157  
8
108  
29
Number of Electrons
100  
18
73  
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm  
16
146.00 pm  
37
Covalent Radius
180.00 pm  
23
170.00 pm  
27
Van der Waals Radius
245.00 pm  
13
200.00 pm  
35
Atomic Weight
257.00 amu  
15
180.95 amu  
38
Atomic Volume
18.00 cm3/mol  
99+
10.90 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Einsteinium
  
Hafnium
  
Next Element
Mendelevium
  
Tungsten
  
Valence Electron Potential
0.00 (-eV)  
99+
110.00 (-eV)  
7
Lattice Constant
350.00 pm  
99+
330.13 pm  
99+
Lattice Angles
-  
π/2, π/2, π/2  
Lattice C/A Ratio
1.63  
13
1.41  
99+
Mechanical
Density
  
  
Density At Room Temperature
9.70 g/cm3  
99+
16.69 g/cm3  
18
Density When Liquid (at m.p.)
9.70 g/cm3  
99+
15.00 g/cm3  
23
Tensile Strength
0.10 MPa  
99+
180.00 MPa  
20
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
22
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
30
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
30.00 GPa  
27
69.00 GPa  
13
Bulk Modulus
50.00 GPa  
24
200.00 GPa  
8
Young's Modulus
0.00 GPa  
99+
186.00 GPa  
14
Poisson Ratio
0.35  
9
0.34  
10
Other Mechanical Properties
-  
Ductile  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
9.70  
99+
16.65  
20
Magnetic Ordering
-  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
17
Susceptibility
0.00  
24
0.00  
27
Electrical Properties
  
  
Electrical Property
-  
Conductor  
Resistivity
7.90 nΩ·m  
99+
131.00 nΩ·m  
25
Electrical Conductivity
0.00 106/cm Ω  
99+
0.08 106/cm Ω  
32
Electron Affinity
0.00 kJ/mol  
99+
31.00 kJ/mol  
35
Thermal
Specific Heat
0.10 J/(kg K)  
99+
0.14 J/(kg K)  
38
Molar Heat Capacity
27.00 J/mol·K  
29
25.36 J/mol·K  
99+
Thermal Conductivity
0.00 W/m·K  
99+
57.50 W/m·K  
27
Critical Temperature
1,323.00 K  
99+
3,290.00 K  
4
Thermal Expansion
11.00 µm/(m·K)  
99+
6.30 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
319.20 kJ/mol  
99+
753.10 kJ/mol  
2
Enthalpy of Fusion
13.30 kJ/mol  
30
31.40 kJ/mol  
3
Enthalpy of Atomization
-  
782.00 kJ/mol  
3
Standard Molar Entropy
50.00 J/mol.K  
99+
41.50 J/mol.K  
99+
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