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Technetium Properties
Technetium


Physical
0
Melting Point
2,200.00 °C 9
Boiling Point
4,877.00 °C 7
Hardness
0
Mohs Hardness
Not Available 0
Brinell Hardness
Not Available 0
Vickers Hardness
Not Available 0
Optical Properties
0
Refractive Index
Not Available 0
Reflectivity
Not Available 0
Speed of Sound
16,200.00 m/s 1
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
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
Mechanical
0
Density
0
Density At Room Temperature
11.00 g/cm3 34
Density When Liquid (at m.p.)
Not Available 0
Vapor Pressure
0
Vapor Pressure at 1000 K
Not Available 0
Vapor Pressure at 2000 K
Not Available 0
Tensile Strength
Not Available 0
Viscosity
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
Periodic Table
0
Symbol
Tc 0
Group Number
7 11
Period Number
5 3
Block
d block 0
Element Family
Transition Metal 0
Atomic
0
Atomic Number
43 69
Atomic Weight
98.00 amu 63
Atomic Volume
8.50 cm3/mol 57
Electron Configuration
[Kr] 4d5 5s2 0
Valence Electron Potential
180.00 (-eV) 3
Atom
0
Number of Protons
43 68
Number of Neutrons
55 51
Number of Electrons
43 68
Crystal Structure
Hexagonal Close Packed (HCP) 0
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100 0
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
Lattice Constant
273.50 pm 65
Lattice Angles
π/2, π/2, 2 π/3 0
Lattice C/A Ratio
1.60 5
Adjacent Atomic Numbers
0
Next Element
61 0
Previous Element
34 0
Magnetic
0
Electrical Properties
0
Resistivity
200.00 nΩ·m 18
Electrical Conductivity
0.07 106/cm Ω 30
Electron Affinity
53.00 kJ/mol 18
Electrical Property
Conductor 0
Magnetic Characteristics
0
Specific Gravity
11.50 24
Magnetic Ordering
Paramagnetic 0
Permeability
Not Available 0
Susceptibility
Not Available 0
Thermal
0
Specific Heat
0.21 J/(kg K) 29
Thermal Conductivity
50.60 W/m·K 30
Critical Temperature
Not Available 0
Molar Heat Capacity
24.27 J/mol·K 52
Thermal Expansion
7.10 µm/(m·K) 49
Standard Molar Entropy
181.10 J/mol.K 2
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
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