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Uranium vs Technetium

Uranium
Technetium
Technetium vs Uranium


Periodic Table
Symbol
U   
Tc   
Group Number
0   
18
7   
11
Period Number
7   
5   
Block
f block   
d block   
Element Family
Actinide   
Transition Metal   
CAS Number
7440611   
28
7440268   
99+
Space Group Name
Cmcm   
P63/mmc   
Space Group Number
63.00   
10
194.00   
5
Facts
Interesting Facts
  • Major mining countries of Uranium include Russia, Australia, Namibia, Canada and Niger and total 33% Uranium are mine in Kazakhstan.
  
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
  
Sources
Earth's crust, Mining, Ores of Minerals   
Made by Bombarding Molybdenum with Deuterons   
History
  
  
Who Discovered
Not Available   
Emilio Segrè and Carlo Perriero   
Discovery
In 1789   
In 1937   
Abundance
  
  
Abundance In Universe
2 * 10-8 %   
29
Not Available   
Abundance In Sun
~0.0000001 %   
26
~-9999 %   
Abundance In Meteorites
0.00 %   
99+
Not Available   
Abundance In Earth's Crust
0.00 %   
36
Not Available   
Abundance In Oceans
0.00 %   
11
Not Available   
Uses
Uses & Benefits
  • 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.
  
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
Industrial Uses
Ammunition Industry, Chemical Industry   
NA   
Medical Uses
NA   
NA   
Other Uses
Alloys, Jewellery, Nuclear Reactor's Fuel, Sculptures, Statues   
Alloys, Nuclear Research, Research Purposes   
Biological Properties
  
  
Toxicity
Toxic   
Low Toxic   
Present in Human Body
No   
No   
In Blood
Not Available   
0.00 Blood/mg dm-3   
37
In Bone
Not Available   
0.00 p.p.m.   
36
Physical Properties
Melting Point
1,132.00 °C   
39
2,200.00 °C   
9
Boiling Point
3,818.00 °C   
16
4,877.00 °C   
7
Appearance
  
  
Physical State
Solid   
Solid   
Color
Silvery Gray   
Shiny Gray   
Luster
Metallic   
NA   
Hardness
  
  
Mohs Hardness
6.00   
6
Not Available   
Brinell Hardness
2,350.00 MPa   
2
Not Available   
Vickers Hardness
1,960.00 MPa   
2
Not Available   
Speed of Sound
3,155.00 m/s   
25
16,200.00 m/s   
1
Optical Properties
  
  
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
U   
Tc   
Isotopes
  
  
Known Isotopes
25   
14
18   
21
Electronegativity
  
  
Pauling Electronegativity
1.38   
28
1.90   
11
Allred Rochow Electronegativity
1.22   
26
1.36   
20
Allen Electronegativity
Not Available   
1.51   
28
Electropositivity
  
  
Pauling Electropositivity
2.62   
26
2.10   
99+
Ionization Energies
  
  
1st Energy Level
597.60 kJ/mol   
99+
702.00 kJ/mol   
36
2nd Energy Level
1,420.00 kJ/mol   
99+
1,470.00 kJ/mol   
99+
3rd Energy Level
1,900.00 kJ/mol   
99+
2,850.00 kJ/mol   
33
4th Energy Level
3,145.00 kJ/mol   
99+
Not Available   
Electrochemical Equivalent
1.48 g/amp-hr   
99+
0.52 g/amp-hr   
99+
Electron Work Function
3.63 eV   
30
Not Available   
Other Chemical Properties
Ionization, Radioactive Isotopes, Radioactivity   
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility   
Atomic Properties
Atomic Number
92   
26
43   
99+
Electron Configuration
[Rn] 5f3 6d1 7s2   
[Kr] 4d5 5s2   
Crystal Structure
Orthorhombic (ORTH)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
ORTH-Crystal-Structure-of-Uranium.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   
Atom
  
  
Number of Protons
92   
26
43   
99+
Number of Neutrons
146   
13
55   
99+
Number of Electrons
92   
26
43   
99+
Radius of an Atom
  
  
Atomic Radius
156.00 pm   
29
136.00 pm   
99+
Covalent Radius
196.00 pm   
14
147.00 pm   
37
Van der Waals Radius
186.00 pm   
33
200.00 pm   
28
Atomic Weight
238.03 amu   
21
98.00 amu   
99+
Atomic Volume
12.59 cm3/mol   
40
8.50 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Protactinium
  
Molybdenum
  
Next Element
Neptunium
  
Ruthenium
  
Valence Electron Potential
170.00 (-eV)   
4
180.00 (-eV)   
3
Lattice Constant
295.08 pm   
99+
273.50 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.60   
5
Mechanical Properties
Density
  
  
Density At Room Temperature
19.10 g/cm3   
17
11.00 g/cm3   
34
Density When Liquid (at m.p.)
17.30 g/cm3   
7
Not Available   
Tensile Strength
Not Available   
Not Available   
Viscosity
Not Available   
Not Available   
Vapor Pressure
  
  
Vapor Pressure at 2000 K
0.01 (Pa)   
20
Not Available   
Elasticity properties
  
  
Shear Modulus
111.00 GPa   
10
Not Available   
Bulk Modulus
100.00 GPa   
16
Not Available   
Young's Modulus
208.00 GPa   
10
Not Available   
Poisson Ratio
0.23   
30
Not Available   
Other Mechanical Properties
Ductile, Malleable   
NA   
Magnetic Properties
Magnetic Characteristics
  
  
Specific Gravity
18.80   
10
11.50   
24
Magnetic Ordering
Paramagnetic   
Paramagnetic   
Electrical Properties
  
  
Electrical Property
Poor Conductor   
Conductor   
Resistivity
0.28 nΩ·m   
99+
200.00 nΩ·m   
18
Electrical Conductivity
0.04 106/cm Ω   
37
0.07 106/cm Ω   
30
Electron Affinity
Not Available   
53.00 kJ/mol   
18
Thermal Properties
Specific Heat
0.12 J/(kg K)   
40
0.21 J/(kg K)   
29
Molar Heat Capacity
27.67 J/mol·K   
15
24.27 J/mol·K   
99+
Thermal Conductivity
27.50 W/m·K   
40
50.60 W/m·K   
30
Critical Temperature
Not Available   
Not Available   
Thermal Expansion
13.90 µm/(m·K)   
27
7.10 µm/(m·K)   
99+
Enthalpy
  
  
Enthalpy of Vaporization
477.00 kJ/mol   
13
660.00 kJ/mol   
6
Enthalpy of Fusion
15.48 kJ/mol   
19
23.01 kJ/mol   
9
Enthalpy of Atomization
489.50 kJ/mol   
14
649.00 kJ/mol   
8
Standard Molar Entropy
50.20 J/mol.K   
31
181.10 J/mol.K   
2
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