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Atomic Structure of Radium and Protactinium

Radium
Protactinium
Atomic Structure of Protactinium and Radium


Atomic Properties
Atomic Number
88   
30
91   
27
Electron Configuration
[Rn] 7s2   
[Rn] 5f2 6d1 7s2   
Crystal Structure
Body Centered Cubic (BCC)   
Tetragonal (TETR)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Atom
  
  
Number of Protons
88   
30
91   
27
Number of Neutrons
138   
16
122   
21
Number of Electrons
88   
30
91   
27
Radius of an Atom
  
  
Atomic Radius
Not Available   
163.00 pm   
25
Covalent Radius
221.00 pm   
3
200.00 pm   
11
Van der Waals Radius
283.00 pm   
4
243.00 pm   
11
Atomic Weight
226.00 amu   
26
231.04 amu   
24
Atomic Volume
45.20 cm3/mol   
4
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Thorium
  
Next Element
Actinium
  
Uranium
  
Valence Electron Potential
20.10 (-eV)   
99+
92.00 (-eV)   
11
Lattice Constant
514.80 pm   
13
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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