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Atomic Structure of Magnesium and Promethium


Atomic Structure of Promethium and Magnesium


Atomic Properties

Atomic Number
12   
99+
61   
99+

Electron Configuration
[Ne] 3s2   
[Xe] 4f5 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Magnesium.jpg#100   
DHCP-Crystal-Structure-of-Promethium.jpg#100   

Atom
  
  

Number of Protons
12   
99+
61   
99+

Number of Neutrons
12   
99+
84   
40

Number of Electrons
12   
99+
61   
99+

Radius of an Atom
  
  

Atomic Radius
160.00 pm   
27
183.00 pm   
10

Covalent Radius
141.00 pm   
99+
199.00 pm   
12

Van der Waals Radius
173.00 pm   
37
236.00 pm   
16

Atomic Weight
24.31 amu   
99+
145.00 amu   
99+

Atomic Volume
13.97 cm3/mol   
37
22.39 cm3/mol   
12

Adjacent Atomic Numbers
  
  

Previous Element
Sodium
  
Neodymium
  

Next Element
Aluminium
  
Samarium
  

Valence Electron Potential
40.00 (-eV)   
99+
44.10 (-eV)   
39

Lattice Constant
320.94 pm   
99+
Not Available   

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

Lattice C/A Ratio
Not Available   
Not Available   

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