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Atomic Structure of Europium and Protactinium

Europium
Protactinium
Atomic Structure of Protactinium and Europium


Atomic Properties
Atomic Number
63   
99+
91   
27
Electron Configuration
[Xe] 4f7 6s2   
[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
63   
99+
91   
27
Number of Neutrons
89   
38
122   
21
Number of Electrons
63   
99+
91   
27
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
163.00 pm   
25
Covalent Radius
198.00 pm   
13
200.00 pm   
11
Van der Waals Radius
233.00 pm   
18
243.00 pm   
11
Atomic Weight
151.96 amu   
99+
231.04 amu   
24
Atomic Volume
28.90 cm3/mol   
8
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
Previous Element
Samarium
  
Thorium
  
Next Element
Gadolinium
  
Uranium
  
Valence Electron Potential
45.60 (-eV)   
35
92.00 (-eV)   
11
Lattice Constant
458.10 pm   
17
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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