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Atomic Structure of Strontium and Protactinium

Strontium
Protactinium
Atomic Structure of Protactinium and Strontium


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