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What is Technetium?
Technetium


Periodic Table
0
Symbol
Tc 0
Group Number
7 11
Period Number
5 3
Block
d block 0
Element Family
Transition Metal 0
CAS Number
7440268 54
Space Group Name
P63/mmc 0
Space Group Number
194.00 5
Facts
0
Interesting Facts
  • Original name of Technetium was Masurium.
  • At the time of its discovery it found in sample of Molybdenum.
0
Sources
Made by Bombarding Molybdenum with Deuterons 0
History
0
Who Discovered
Emilio Segrè and Carlo Perriero 0
Discovery
In 1937 0
Abundance
0
Abundance In Universe
Not Available 0
Abundance In Sun
~-9999 % 0
Abundance In Meteorites
Not Available 0
Abundance In Earth's Crust
Not Available 0
Abundance In Oceans
Not Available 0
Abundance In Humans
Not Available 0
Uses
0
Uses & Benefits
  • Technetium is a radioactive metal and hence it is used for medical studies and other research purposes.
0
Industrial Uses
NA 0
Medical Uses
NA 0
Other Uses
Alloys, Nuclear Research, Research Purposes 0
Biological Properties
0
Toxicity
Low Toxic 0
Present in Human Body
No 0
In Blood
0.00 Blood/mg dm-3 37
In Bone
0.00 p.p.m. 36
Physical
0
Melting Point
2,200.00 °C 9
Boiling Point
4,877.00 °C 7
Appearance
0
Physical State
Solid 0
Color
Shiny Gray 0
Luster
NA 0
Hardness
0
Mohs Hardness
Not Available 0
Brinell Hardness
Not Available 0
Vickers Hardness
Not Available 0
Speed of Sound
16,200.00 m/s 1
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Allotropes
No 0
α Allotropes
Not Available 0
β Allotropes
Not Available 0
γ Allotropes
Not Available 0
Chemical
0
Chemical Formula
Tc 0
Isotopes
0
Known Isotopes
18 21
Electronegativity
0
Pauling Electronegativity
1.90 11
Sanderson Electronegativity
Not Available 0
Allred Rochow Electronegativity
1.36 20
Mulliken-Jaffe Electronegativity
Not Available 0
Allen Electronegativity
1.51 28
Electropositivity
0
Pauling Electropositivity
2.10 42
Ionization Energies
0
1st Energy Level
702.00 kJ/mol 36
2nd Energy Level
1,470.00 kJ/mol 41
3rd Energy Level
2,850.00 kJ/mol 33
4th Energy Level
Not Available 0
5th Energy Level
Not Available 0
6th Energy Level
Not Available 0
7th Energy level
Not Available 0
8th Energy Level
Not Available 0
9th Energy Level
Not Available 0
10th Energy Level
Not Available 0
11th Energy Level
Not Available 0
12th Energy Level
Not Available 0
13th Energy Level
Not Available 0
14th Energy Level
Not Available 0
15th Energy Level
Not Available 0
16th Energy Level
Not Available 0
17th Energy Level
Not Available 0
18th Energy Level
Not Available 0
19th Energy Level
Not Available 0
20th Energy Level
Not Available 0
21st Energy Level
Not Available 0
22nd Energy Level
Not Available 0
23rd Energy Level
Not Available 0
24th Energy Level
Not Available 0
25th Energy Level
Not Available 0
26th Energy Level
Not Available 0
27th Energy Level
Not Available 0
28th Energy Level
Not Available 0
29th Energy Level
Not Available 0
30th Energy Level
Not Available 0
Electrochemical Equivalent
0.52 g/amp-hr 68
Electron Work Function
Not Available 0
Other Chemical Properties
Anti Corrosion, Ionization, Radioactive Isotopes, Radioactivity, Solubility 0
Atomic
0
Atomic Number
43 69
Electron Configuration
[Kr] 4d5 5s2 0
Crystal Structure
Hexagonal Close Packed (HCP) 0
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100 0
Atom
0
Number of Protons
43 68
Number of Neutrons
55 51
Number of Electrons
43 68
Radius of an Atom
0
Atomic Radius
136.00 pm 41
Covalent Radius
147.00 pm 37
Van der Waals Radius
200.00 pm 28
Atomic Weight
98.00 amu 63
Atomic Volume
8.50 cm3/mol 57
Adjacent Atomic Numbers
0
Previous Element
34 0
Next Element
61 0
Valence Electron Potential
180.00 (-eV) 3
Lattice Constant
273.50 pm 65
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
1.60 5
Mechanical
0
Density
0
Density At Room Temperature
11.00 g/cm3 34
Density When Liquid (at m.p.)
Not Available 0
Tensile Strength
Not Available 0
Viscosity
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
Not Available 0
Vapor Pressure at 2000 K
Not Available 0
Elasticity properties
0
Shear Modulus
Not Available 0
Bulk Modulus
Not Available 0
Young's Modulus
Not Available 0
Poisson Ratio
Not Available 0
Other Mechanical Properties
NA 0
Magnetic
0
Magnetic Characteristics
0
Specific Gravity
11.50 24
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Electrical Properties
0
Electrical Property
Conductor 0
Resistivity
200.00 nΩ·m 18
Electrical Conductivity
0.07 106/cm Ω 30
Electron Affinity
53.00 kJ/mol 18
Thermal
0
Specific Heat
0.21 J/(kg K) 29
Molar Heat Capacity
24.27 J/mol·K 52
Thermal Conductivity
50.60 W/m·K 30
Critical Temperature
Not Available 0
Thermal Expansion
7.10 µm/(m·K) 49
Enthalpy
0
Enthalpy of Vaporization
660.00 kJ/mol 6
Enthalpy of Fusion
23.01 kJ/mol 9
Enthalpy of Atomization
649.00 kJ/mol 8
Standard Molar Entropy
181.10 J/mol.K 2
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