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Plutonium vs Technetium

Plutonium
Technetium
Technetium vs Plutonium


Periodic Table
Symbol
Pu  
Tc  
Group Number
0  
18
7  
11
Period Number
7  
5  
Block
f block  
d block  
Element Family
Actinide  
Transition Metal  
CAS Number
7440075  
99+
7440268  
99+
Space Group Name
P121/m1  
P63/mmc  
Space Group Number
11.00  
16
194.00  
7
Facts
Interesting Facts
  • Plutonium metal if obtain from ores of uranium metal.
  • Plutonium metal is very sensitive to the change in atmospheric conditions like temperature and pressure.
  
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
Sources
Mining, Ores of metals  
Made by Bombarding Molybdenum with Deuterons  
History
  
  
Who Discovered
Glenn T. Seaborg, Arthur Wahl, Joseph W. Kennedy, Edwin McMillan  
Emilio Segrè and Carlo Perriero  
Discovery
In Between 1940 1941  
In 1937  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
40
Abundance In Sun
0.00 %  
21
0.00 %  
18
Abundance In Meteorites
-  
-  
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
99+
Abundance In Oceans
-  
-  
Abundance In Humans
0.00 %  
24
-  
Uses
Uses & Benefits
  • Plutonium was used in atomic bombs and still it is being used in various weapons and Ammunition industry.
  • It is also used in nuclear power plant as source of energy for space missions.
  
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
Industrial Uses
Aerospace Industry, Ammunition Industry  
-  
Medical Uses
-  
-  
Other Uses
Alloys  
Alloys, Nuclear Research, Research Purposes  
Biological Properties
  
  
Toxicity
Toxic  
Low Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
40
In Bone
0.00 p.p.m.  
99+
0.00 p.p.m.  
99+
Physical
Melting Point
639.50 °C  
99+
2,200.00 °C  
9
Boiling Point
3,235.00 °C  
25
4,877.00 °C  
7
Appearance
  
  
Physical State
Solid  
Solid  
Color
Silvery White  
Shiny Gray  
Luster
-  
-  
Hardness
  
  
Mohs Hardness
4.00  
11
2.25  
16
Brinell Hardness
627.00 MPa  
22
550.00 MPa  
27
Vickers Hardness
617.00 MPa  
26
500.00 MPa  
35
Speed of Sound
2,260.00 m/s  
99+
16,200.00 m/s  
1
Optical Properties
  
  
Refractive Index
1.90  
18
1.90  
18
Reflectivity
68.00 %  
15
35.00 %  
34
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Pu  
Tc  
Isotopes
  
  
Known Isotopes
20  
19
18  
21
Electronegativity
  
  
Pauling Electronegativity
1.28  
34
1.90  
12
Sanderson Electronegativity
1.28  
26
1.90  
13
Allred Rochow Electronegativity
1.22  
27
1.36  
21
Mulliken-Jaffe Electronegativity
1.30  
33
1.90  
13
Allen Electronegativity
1.28  
99+
1.51  
31
Electropositivity
  
  
Pauling Electropositivity
2.72  
21
2.10  
99+
Ionization Energies
  
  
1st Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
36
2nd Energy Level
1,128.00 kJ/mol  
99+
1,470.00 kJ/mol  
99+
3rd Energy Level
2,084.00 kJ/mol  
99+
2,850.00 kJ/mol  
34
4th Energy Level
3,338.00 kJ/mol  
99+
7,020.00 kJ/mol  
14
5th Energy Level
5,847.00 kJ/mol  
99+
7,020.00 kJ/mol  
28
6th Energy Level
5,847.00 kJ/mol  
99+
7,020.00 kJ/mol  
99+
7th Energy level
5,840.00 kJ/mol  
99+
4,700.00 kJ/mol  
99+
8th Energy Level
5,840.00 kJ/mol  
99+
4,700.00 kJ/mol  
99+
9th Energy Level
5,840.00 kJ/mol  
99+
7,020.00 kJ/mol  
35
10th Energy Level
5,840.00 kJ/mol  
99+
7,020.00 kJ/mol  
39
11th Energy Level
5,840.00 kJ/mol  
99+
7,020.00 kJ/mol  
37
12th Energy Level
58,400.00 kJ/mol  
18
7,020.00 kJ/mol  
99+
13th Energy Level
5,840.00 kJ/mol  
99+
7,020.00 kJ/mol  
33
14th Energy Level
5,840.00 kJ/mol  
39
7,020.00 kJ/mol  
23
15th Energy Level
58,400.00 kJ/mol  
99+
70,200.00 kJ/mol  
29
16th Energy Level
58,400.00 kJ/mol  
40
70,200.00 kJ/mol  
24
17th Energy Level
584.70 kJ/mol  
99+
702.50 kJ/mol  
99+
18th Energy Level
5,840.00 kJ/mol  
99+
7,020.00 kJ/mol  
35
19th Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
99+
20th Energy Level
584.00 kJ/mol  
99+
702.00 kJ/mol  
35
21st Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
99+
22nd Energy Level
584.00 kJ/mol  
99+
702.00 kJ/mol  
29
23rd Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
99+
24th Energy Level
584.70 kJ/mol  
99+
702.50 kJ/mol  
28
25th Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
30
26th Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
29
27th Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
30
28th Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
35
29th Energy Level
584.70 kJ/mol  
99+
702.00 kJ/mol  
36
30th Energy Level
584.00 kJ/mol  
99+
702.00 kJ/mol  
30
Electrochemical Equivalent
2.28 g/amp-hr  
26
0.52 g/amp-hr  
99+
Electron Work Function
3.88 eV  
38
4.90 eV  
12
Other Chemical Properties
Corrosion, Ionization, Radioactive Isotopes, Radioactivity  
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Atomic
Atomic Number
94  
24
43  
99+
Electron Configuration
[Rn] 5f6 7s2  
[Kr] 4d5 5s2  
Crystal Structure
Monoclinic (MON)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
MON-Crystal-Structure-of-Plutonium.jpg#100  
HCP-Crystal-Structure-of-Technetium.jpg#100  
Atom
  
  
Number of Protons
94  
24
43  
99+
Number of Neutrons
150  
12
55  
99+
Number of Electrons
94  
24
43  
99+
Radius of an Atom
  
  
Atomic Radius
159.00 pm  
30
136.00 pm  
99+
Covalent Radius
187.00 pm  
20
147.00 pm  
39
Van der Waals Radius
200.00 pm  
35
200.00 pm  
35
Atomic Weight
244.00 amu  
19
98.00 amu  
99+
Atomic Volume
12.32 cm3/mol  
99+
8.50 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Neptunium
  
Molybdenum
  
Next Element
Americium
  
Ruthenium
  
Valence Electron Potential
64.90 (-eV)  
21
180.00 (-eV)  
3
Lattice Constant
618.30 pm  
4
273.50 pm  
99+
Lattice Angles
-  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.74  
6
1.60  
21
Mechanical
Density
  
  
Density At Room Temperature
19.82 g/cm3  
13
11.00 g/cm3  
36
Density When Liquid (at m.p.)
16.63 g/cm3  
18
11.00 g/cm3  
34
Tensile Strength
40.00 MPa  
99+
50.00 MPa  
38
Viscosity
0.00  
25
0.00  
25
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
28
0.00 (Pa)  
37
Vapor Pressure at 2000 K
2.20 (Pa)  
12
0.00 (Pa)  
99+
Elasticity properties
  
  
Shear Modulus
43.00 GPa  
18
27.00 GPa  
34
Bulk Modulus
100.00 GPa  
16
100.00 GPa  
16
Young's Modulus
96.00 GPa  
23
50.00 GPa  
39
Poisson Ratio
0.21  
33
0.38  
6
Other Mechanical Properties
Ductile, Malleable  
-  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
19.84  
16
11.50  
37
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
16
0.00 H/m  
17
Susceptibility
0.00  
21
0.00  
24
Electrical Properties
  
  
Electrical Property
Poor Conductor  
Conductor  
Resistivity
1.46 nΩ·m  
99+
200.00 nΩ·m  
18
Electrical Conductivity
0.01 106/cm Ω  
99+
0.07 106/cm Ω  
35
Electron Affinity
0.60 kJ/mol  
99+
53.00 kJ/mol  
23
Thermal
Specific Heat
0.13 J/(kg K)  
40
0.21 J/(kg K)  
30
Molar Heat Capacity
35.50 J/mol·K  
4
24.27 J/mol·K  
99+
Thermal Conductivity
6.74 W/m·K  
99+
50.60 W/m·K  
30
Critical Temperature
913.00 K  
99+
2,150.00 K  
16
Thermal Expansion
46.70 µm/(m·K)  
6
7.10 µm/(m·K)  
99+
Enthalpy
  
  
Enthalpy of Vaporization
344.00 kJ/mol  
36
660.00 kJ/mol  
7
Enthalpy of Fusion
2.82 kJ/mol  
99+
23.01 kJ/mol  
9
Enthalpy of Atomization
360.00 kJ/mol  
35
649.00 kJ/mol  
9
Standard Molar Entropy
37.10 J/mol.K  
99+
181.10 J/mol.K  
2
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