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Atomic Structure of Magnesium and Protactinium

Magnesium
Protactinium
Atomic Structure of Protactinium and Magnesium


Atomic Properties
Atomic Number
12   
99+
91   
27
Electron Configuration
[Ne] 3s2   
[Rn] 5f2 6d1 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Tetragonal (TETR)   
Crystal Lattice
HCP-Crystal-Structure-of-Magnesium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Atom
  
  
Number of Protons
12   
99+
91   
27
Number of Neutrons
12   
99+
122   
21
Number of Electrons
12   
99+
91   
27
Radius of an Atom
  
  
Atomic Radius
160.00 pm   
27
163.00 pm   
25
Covalent Radius
141.00 pm   
99+
200.00 pm   
11
Van der Waals Radius
173.00 pm   
37
243.00 pm   
11
Atomic Weight
24.31 amu   
99+
231.04 amu   
24
Atomic Volume
13.97 cm3/mol   
37
15.00 cm3/mol   
34
Adjacent Atomic Numbers
  
  
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Sodium
  
Thorium
  
Next Element
Aluminium
  
Uranium
  
Valence Electron Potential
40.00 (-eV)   
99+
92.00 (-eV)   
11
Lattice Constant
320.94 pm   
99+
392.50 pm   
23
Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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