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Atomic Structure of Protactinium and Strontium

Protactinium
Strontium
Atomic Structure of Strontium and Protactinium


Atomic Properties
Atomic Number
91   
27
38   
99+
Electron Configuration
[Rn] 5f2 6d1 7s2   
[Kr] 5s2   
Crystal Structure
Tetragonal (TETR)   
Face Centered Cubic (FCC)   
Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
FCC-Crystal-Structure-of-Strontium.jpg#100   
Atom
  
  
Number of Protons
91   
27
38   
99+
Number of Neutrons
122   
21
50   
99+
Number of Electrons
91   
27
38   
99+
Radius of an Atom
  
  
Atomic Radius
163.00 pm   
25
215.00 pm   
5
Covalent Radius
200.00 pm   
11
195.00 pm   
15
Van der Waals Radius
243.00 pm   
11
249.00 pm   
7
Atomic Weight
231.04 amu   
24
87.62 amu   
99+
Atomic Volume
15.00 cm3/mol   
34
33.70 cm3/mol   
6
Adjacent Atomic Numbers
  
  
Previous Element
Thorium
  
Rubidium
  
Next Element
Uranium
  
Yttrium
  
Valence Electron Potential
92.00 (-eV)   
11
25.70 (-eV)   
99+
Lattice Constant
392.50 pm   
23
608.49 pm   
6
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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