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Atomic Structure of Polonium and Protactinium

Polonium
Protactinium
Atomic Structure of Protactinium and Polonium


Atomic Properties
Atomic Number
84   
32
91   
27
Electron Configuration
[Xe] 4f14 5d10 6s2 6p4   
[Rn] 5f2 6d1 7s2   
Crystal Structure
Monoclinic (MON)   
Tetragonal (TETR)   
Crystal Lattice
MON-Crystal-Structure-of-Polonium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Atom
  
  
Number of Protons
84   
32
91   
27
Number of Neutrons
125   
19
122   
21
Number of Electrons
84   
32
91   
27
Radius of an Atom
  
  
Atomic Radius
168.00 pm   
23
163.00 pm   
25
Covalent Radius
140.00 pm   
99+
200.00 pm   
11
Van der Waals Radius
197.00 pm   
29
243.00 pm   
11
Atomic Weight
209.00 amu   
28
231.04 amu   
24
Atomic Volume
22.23 cm3/mol   
13
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
Previous Element
Bismuth
  
Thorium
  
Next Element
Francium
  
Uranium
  
Valence Electron Potential
Not Available   
92.00 (-eV)   
11
Lattice Constant
335.90 pm   
99+
392.50 pm   
23
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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