Symbol
Tc
  
Sg
  
Period Number
5
  
7
  
Block
d block
  
d block
  
Element Family
Transition Metal
  
Transition Metal
  
Space Group Name
P63/mmc
  
Not Available
  
Space Group Number
Not Available
  
Interesting Facts
- Original name of Technetium was Masurium.
- At the time of its discovery it found in sample of Molybdenum.
  
- 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.
  
Sources
Made by Bombarding Molybdenum with Deuterons
  
Synthetically Produced
  
History
  
  
Who Discovered
Emilio Segrè and Carlo Perriero
  
Lawrence Berkeley National Laboratory
  
Discovery
In 1937
  
In 1974
  
Abundance
  
  
Uses & Benefits
- Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
  
- Currently known uses of Seaborgium metal are limited to research purpose only.
  
Industrial Uses
NA
  
NA
  
Medical Uses
NA
  
NA
  
Other Uses
Alloys, Nuclear Research, Research Purposes
  
Research Purposes
  
Biological Properties
  
  
Toxicity
Low Toxic
  
Unknown
  
Present in Human Body
No
  
No
  
In Blood
0.00 Blood/mg dm-3
  
37
Not Available
  
In Bone
0.00 p.p.m.
  
36
Not Available
  
Melting Point
Not Available
  
Boiling Point
Not Available
  
Appearance
  
  
Physical State
Solid
  
Solid
  
Color
Shiny Gray
  
Unknown
  
Luster
NA
  
Unknown Luster
  
Hardness
  
  
Speed of Sound
16,200.00 m/s
  
1
Not Available
  
Optical Properties
  
  
Allotropes
No
  
No
  
α Allotropes
Not Available
  
Not Available
  
β Allotropes
Not Available
  
Not Available
  
γ Allotropes
Not Available
  
Not Available
  
Chemical Formula
Tc
  
Sg
  
Isotopes
  
  
Electronegativity
  
  
Pauling Electronegativity
Not Available
  
Allred Rochow Electronegativity
Not Available
  
Allen Electronegativity
Not Available
  
Electropositivity
  
  
Pauling Electropositivity
Not Available
  
Ionization Energies
  
  
1st Energy Level
702.00 kJ/mol
  
36
757.40 kJ/mol
  
21
2nd Energy Level
1,470.00 kJ/mol
  
99+
1,732.90 kJ/mol
  
28
3rd Energy Level
2,850.00 kJ/mol
  
33
2,483.50 kJ/mol
  
99+
4th Energy Level
Not Available
  
3,415.60 kJ/mol
  
99+
5th Energy Level
Not Available
  
4,561.80 kJ/mol
  
38
6th Energy Level
Not Available
  
5,715.80 kJ/mol
  
25
Electrochemical Equivalent
0.52 g/amp-hr
  
99+
Not Available
  
Electron Work Function
Not Available
  
Not Available
  
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility
  
NA
  
Electron Configuration
[Kr] 4d5 5s2
  
[Rn] 5f14 6d2 7s2
  
Crystal Structure
Hexagonal Close Packed (HCP)
  
Body Centered Cubic (BCC)
  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100
  
BCC-Crystal-Structure-.jpg#100
  
Atom
  
  
Radius of an Atom
  
  
Van der Waals Radius
Not Available
  
Atomic Volume
8.50 cm3/mol
  
99+
Not Available
  
Adjacent Atomic Numbers
  
  
Valence Electron Potential
180.00 (-eV)
  
3
Not Available
  
Lattice Constant
Not Available
  
Lattice Angles
π/2, π/2, 2 π/3
  
Unknown
  
Lattice C/A Ratio
Not Available
  
Density
  
  
Density At Room Temperature
11.00 g/cm3
  
34
Tensile Strength
Not Available
  
Not Available
  
Viscosity
Not Available
  
Not Available
  
Vapor Pressure
  
  
Elasticity properties
  
  
Poisson Ratio
Not Available
  
Not Available
  
Other Mechanical Properties
NA
  
Unknown
  
Magnetic Characteristics
  
  
Specific Gravity
Not Available
  
Magnetic Ordering
Paramagnetic
  
Unknown
  
Electrical Properties
  
  
Electrical Property
Conductor
  
Unknown
  
Resistivity
200.00 nΩ·m
  
18
Not Available
  
Electrical Conductivity
0.07 10
6/cm Ω
  
30
Not Available
  
Electron Affinity
53.00 kJ/mol
  
18
Not Available
  
Specific Heat
0.21 J/(kg K)
  
29
Not Available
  
Molar Heat Capacity
24.27 J/mol·K
  
99+
Not Available
  
Thermal Conductivity
50.60 W/m·K
  
30
Not Available
  
Critical Temperature
Not Available
  
Not Available
  
Thermal Expansion
7.10 µm/(m·K)
  
99+
Not Available
  
Enthalpy
  
  
Enthalpy of Vaporization
660.00 kJ/mol
  
6
Not Available
  
Enthalpy of Fusion
23.01 kJ/mol
  
9
Not Available
  
Enthalpy of Atomization
649.00 kJ/mol
  
8
Not Available
  
Standard Molar Entropy
181.10 J/mol.K
  
2
Not Available