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Technetium
Summary
Periodic Table
Facts
Uses
Physical
Chemical
Atomic
Mechanical
Magnetic
Thermal
All
Atomic
Atomic Number
43 69
Electron Configuration
[Kr] 4d
5
5s
2
Crystal Structure
Hexagonal Close Packed (HCP)
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100
Atom
Number of Protons
43 68
Number of Neutrons
55 52
Number of Electrons
43 68
Radius of an Atom
Atomic Radius
136.00 pm 43
Covalent Radius
147.00 pm 39
Van der Waals Radius
200.00 pm 35
Atomic Weight
98.00 amu 63
Atomic Volume
8.50 cm3/mol 75
Adjacent Atomic Numbers
Previous Element
34
Next Element
61
Valence Electron Potential
180.00 (-eV) 3
Lattice Constant
273.50 pm 72
Lattice Angles
π/2, π/2, 2 π/3
Lattice C/A Ratio
1.60 21
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