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Atomic Structure of Protactinium and Rhenium

Protactinium
Rhenium
Atomic Structure of Rhenium and Protactinium


Atomic Properties
Atomic Number
91   
27
75   
99+
Electron Configuration
[Rn] 5f2 6d1 7s2   
[Xe] 4f14 5d5 6s2   
Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
91   
27
75   
40
Number of Neutrons
122   
21
111   
26
Number of Electrons
91   
27
75   
40
Radius of an Atom
  
  
Atomic Radius
163.00 pm   
25
137.00 pm   
40
Covalent Radius
200.00 pm   
11
151.00 pm   
34
Van der Waals Radius
243.00 pm   
11
200.00 pm   
28
Atomic Weight
231.04 amu   
24
186.21 amu   
36
Atomic Volume
15.00 cm3/mol   
34
8.85 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Tungsten
  
Next Element
Uranium
  
Osmium
  
Valence Electron Potential
92.00 (-eV)   
11
180.00 (-eV)   
3
Lattice Constant
392.50 pm   
23
276.10 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.62   
3
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