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Atomic Structure of Rhenium and Protactinium

Rhenium
Protactinium
Atomic Structure of Protactinium and Rhenium


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