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Atomic Structure of Protactinium and Magnesium


Atomic Structure of Magnesium and Protactinium


Atomic Properties

Atomic Number
91   
27
12   
99+

Electron Configuration
[Rn] 5f2 6d1 7s2   
[Ne] 3s2   

Crystal Structure
Tetragonal (TETR)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
HCP-Crystal-Structure-of-Magnesium.jpg#100   

Atom
  
  

Number of Protons
91   
27
12   
99+

Number of Neutrons
122   
21
12   
99+

Number of Electrons
91   
27
12   
99+

Radius of an Atom
  
  

Atomic Radius
163.00 pm   
25
160.00 pm   
27

Covalent Radius
200.00 pm   
11
141.00 pm   
99+

Van der Waals Radius
243.00 pm   
11
173.00 pm   
37

Atomic Weight
231.04 amu   
24
24.31 amu   
99+

Atomic Volume
15.00 cm3/mol   
34
13.97 cm3/mol   
37

Adjacent Atomic Numbers
  
  

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Sodium
  

Next Element
Uranium
  
Aluminium
  

Valence Electron Potential
92.00 (-eV)   
11
40.00 (-eV)   
99+

Lattice Constant
392.50 pm   
23
320.94 pm   
99+

Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   

Lattice C/A Ratio
Not Available   
Not Available   

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