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Atomic Structure of Technetium and Thorium

Technetium
Thorium
Atomic Structure of Thorium and Technetium


Atomic
Atomic Number
43  
99+
90  
28
Electron Configuration
[Kr] 4d5 5s2  
[Rn] 6d2 7s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Face Centered Cubic (FCC)  
Crystal Lattice
HCP-Crystal-Structure-of-Technetium.jpg#100  
FCC-Crystal-Structure-of-Thorium.jpg#100  
Atom
  
  
Number of Protons
43  
99+
90  
28
Number of Neutrons
55  
99+
142  
16
Number of Electrons
43  
99+
90  
28
Radius of an Atom
  
  
Atomic Radius
136.00 pm  
99+
179.80 pm  
17
Covalent Radius
147.00 pm  
39
206.00 pm  
7
Van der Waals Radius
200.00 pm  
35
237.00 pm  
19
Atomic Weight
98.00 amu  
99+
232.04 amu  
23
Atomic Volume
8.50 cm3/mol  
99+
19.90 cm3/mol  
32
Adjacent Atomic Numbers
  
  
Previous Element
Molybdenum
  
Actinium
  
Next Element
Ruthenium
  
Protactinium
  
Valence Electron Potential
180.00 (-eV)  
3
59.30 (-eV)  
24
Lattice Constant
273.50 pm  
99+
508.42 pm  
16
Lattice Angles
π/2, π/2, 2 π/3  
π/2, π/2, π/2  
Lattice C/A Ratio
1.60  
21
1.10  
99+
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