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Technetium vs Uranium

Technetium
Uranium
Uranium vs Technetium


Periodic Table
Symbol
Tc  
U  
Group Number
7  
11
0  
18
Period Number
5  
7  
Block
d block  
f block  
Element Family
Transition Metal  
Actinide  
CAS Number
7440268  
99+
7440611  
28
Space Group Name
P63/mmc  
Cmcm  
Space Group Number
194.00  
7
63.00  
13
Facts
Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
Sources
Made by Bombarding Molybdenum with Deuterons  
Earth's crust, Mining, Ores of Minerals  
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero  
-  
Discovery
In 1937  
In 1789  
Abundance
  
  
Abundance In Universe
0.00 %  
40
0.00 %  
30
Abundance In Sun
0.00 %  
18
0.00 %  
26
Abundance In Meteorites
-  
0.00 %  
99+
Abundance In Earth's Crust
0.00 %  
99+
0.00 %  
36
Abundance In Oceans
-  
0.00 %  
11
Abundance In Humans
-  
0.00 %  
24
Uses
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
  • The main use of this metal include nuclear fuel which is used to generate electricity yin nuclear power stations.
  • Synthetic elements like transuranium are made from Uranium metal.
  
Industrial Uses
-  
Ammunition Industry, Chemical Industry  
Medical Uses
-  
-  
Other Uses
Alloys, Nuclear Research, Research Purposes  
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues  
Biological Properties
  
  
Toxicity
Low Toxic  
Toxic  
Present in Human Body
No  
No  
In Blood
0.00 Blood/mg dm-3  
40
0.00 Blood/mg dm-3  
37
In Bone
0.00 p.p.m.  
99+
1.20 p.p.m.  
19
Physical
Melting Point
2,200.00 °C  
9
1,132.00 °C  
39
Boiling Point
4,877.00 °C  
7
3,818.00 °C  
16
Appearance
  
  
Physical State
Solid  
Solid  
Color
Shiny Gray  
Silvery Gray  
Luster
-  
Metallic  
Hardness
  
  
Mohs Hardness
2.25  
16
6.00  
6
Brinell Hardness
550.00 MPa  
27
2,350.00 MPa  
2
Vickers Hardness
500.00 MPa  
35
1,960.00 MPa  
6
Speed of Sound
16,200.00 m/s  
1
3,155.00 m/s  
36
Optical Properties
  
  
Refractive Index
1.90  
18
1.38  
40
Reflectivity
35.00 %  
34
80.00 %  
7
Allotropes
No  
No  
α Allotropes
-  
-  
β Allotropes
-  
-  
γ Allotropes
-  
-  
Chemical
Chemical Formula
Tc  
U  
Isotopes
  
  
Known Isotopes
18  
21
25  
14
Electronegativity
  
  
Pauling Electronegativity
1.90  
12
1.38  
29
Sanderson Electronegativity
1.90  
13
1.38  
22
Allred Rochow Electronegativity
1.36  
21
1.22  
27
Mulliken-Jaffe Electronegativity
1.90  
13
1.38  
29
Allen Electronegativity
1.51  
31
1.38  
36
Electropositivity
  
  
Pauling Electropositivity
2.10  
99+
2.62  
26
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol  
36
597.60 kJ/mol  
99+
2nd Energy Level
1,470.00 kJ/mol  
99+
1,420.00 kJ/mol  
99+
3rd Energy Level
2,850.00 kJ/mol  
34
1,900.00 kJ/mol  
99+
4th Energy Level
7,020.00 kJ/mol  
14
3,145.00 kJ/mol  
99+
5th Energy Level
7,020.00 kJ/mol  
28
5,976.00 kJ/mol  
99+
6th Energy Level
7,020.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
7th Energy level
4,700.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
8th Energy Level
4,700.00 kJ/mol  
99+
5,976.00 kJ/mol  
99+
9th Energy Level
7,020.00 kJ/mol  
35
5,976.00 kJ/mol  
99+
10th Energy Level
7,020.00 kJ/mol  
39
5,976.00 kJ/mol  
99+
11th Energy Level
7,020.00 kJ/mol  
37
5,976.00 kJ/mol  
99+
12th Energy Level
7,020.00 kJ/mol  
99+
5,970.00 kJ/mol  
99+
13th Energy Level
7,020.00 kJ/mol  
33
5,970.00 kJ/mol  
99+
14th Energy Level
7,020.00 kJ/mol  
23
5,970.00 kJ/mol  
34
15th Energy Level
70,200.00 kJ/mol  
29
59,700.00 kJ/mol  
99+
16th Energy Level
70,200.00 kJ/mol  
24
59,700.00 kJ/mol  
35
17th Energy Level
702.50 kJ/mol  
99+
597.60 kJ/mol  
99+
18th Energy Level
7,020.00 kJ/mol  
35
5,976.00 kJ/mol  
99+
19th Energy Level
702.00 kJ/mol  
99+
597.60 kJ/mol  
99+
20th Energy Level
702.00 kJ/mol  
35
597.00 kJ/mol  
99+
21st Energy Level
702.00 kJ/mol  
99+
597.60 kJ/mol  
99+
22nd Energy Level
702.00 kJ/mol  
29
597.00 kJ/mol  
99+
23rd Energy Level
702.00 kJ/mol  
99+
597.60 kJ/mol  
99+
24th Energy Level
702.50 kJ/mol  
28
597.60 kJ/mol  
99+
25th Energy Level
702.00 kJ/mol  
30
597.60 kJ/mol  
99+
26th Energy Level
702.00 kJ/mol  
29
597.60 kJ/mol  
99+
27th Energy Level
702.00 kJ/mol  
30
597.60 kJ/mol  
99+
28th Energy Level
702.00 kJ/mol  
35
597.60 kJ/mol  
99+
29th Energy Level
702.00 kJ/mol  
36
597.60 kJ/mol  
99+
30th Energy Level
702.00 kJ/mol  
30
597.60 kJ/mol  
99+
Electrochemical Equivalent
0.52 g/amp-hr  
99+
1.48 g/amp-hr  
99+
Electron Work Function
4.90 eV  
12
3.63 eV  
99+
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility  
Ionization, Radioactive Isotopes, Radioactivity  
Atomic
Atomic Number
43  
99+
92  
26
Electron Configuration
[Kr] 4d5 5s2  
[Rn] 5f3 6d1 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Orthorhombic (ORTH)  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100  
ORTH-Crystal-Structure-of-Uranium.jpg#100  
Atom
  
  
Number of Protons
43  
99+
92  
26
Number of Neutrons
55  
99+
146  
14
Number of Electrons
43  
99+
92  
26
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
156.00 pm  
31
Covalent Radius
147.00 pm  
39
196.00 pm  
14
Van der Waals Radius
200.00 pm  
35
186.00 pm  
40
Atomic Weight
98.00 amu  
99+
238.03 amu  
21
Atomic Volume
8.50 cm3/mol  
99+
12.59 cm3/mol  
99+
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Protactinium
  
Next Element
Ruthenium
  
Neptunium
  
Valence Electron Potential
180.00 (-eV)  
3
170.00 (-eV)  
4
Lattice Constant
273.50 pm  
99+
295.08 pm  
99+
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.60  
21
1.02  
99+
Mechanical
Density
  
  
Density At Room Temperature
11.00 g/cm3  
36
19.10 g/cm3  
17
Density When Liquid (at m.p.)
11.00 g/cm3  
34
17.30 g/cm3  
17
Tensile Strength
50.00 MPa  
38
100.00 MPa  
28
Viscosity
0.00  
25
0.00  
21
Vapor Pressure
  
  
Vapor Pressure at 1000 K
0.00 (Pa)  
37
0.00 (Pa)  
37
Vapor Pressure at 2000 K
0.00 (Pa)  
99+
0.01 (Pa)  
20
Elasticity properties
  
  
Shear Modulus
27.00 GPa  
34
111.00 GPa  
10
Bulk Modulus
100.00 GPa  
16
100.00 GPa  
16
Young's Modulus
50.00 GPa  
39
208.00 GPa  
11
Poisson Ratio
0.38  
6
0.23  
30
Other Mechanical Properties
-  
Ductile, Malleable  
Magnetic
Magnetic Characteristics
  
  
Specific Gravity
11.50  
37
18.80  
19
Magnetic Ordering
Paramagnetic  
Paramagnetic  
Permeability
0.00 H/m  
17
0.00 H/m  
16
Susceptibility
0.00  
24
0.00  
24
Electrical Properties
  
  
Electrical Property
Conductor  
Poor Conductor  
Resistivity
200.00 nΩ·m  
18
0.28 nΩ·m  
99+
Electrical Conductivity
0.07 106/cm Ω  
35
0.04 106/cm Ω  
99+
Electron Affinity
53.00 kJ/mol  
23
50.60 kJ/mol  
25
Thermal
Specific Heat
0.21 J/(kg K)  
30
0.12 J/(kg K)  
99+
Molar Heat Capacity
24.27 J/mol·K  
99+
27.67 J/mol·K  
18
Thermal Conductivity
50.60 W/m·K  
30
27.50 W/m·K  
99+
Critical Temperature
2,150.00 K  
16
1,405.00 K  
99+
Thermal Expansion
7.10 µm/(m·K)  
99+
13.90 µm/(m·K)  
30
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol  
7
477.00 kJ/mol  
18
Enthalpy of Fusion
23.01 kJ/mol  
9
15.48 kJ/mol  
19
Enthalpy of Atomization
649.00 kJ/mol  
9
489.50 kJ/mol  
18
Standard Molar Entropy
181.10 J/mol.K  
2
50.20 J/mol.K  
99+
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