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Atomic Structure of Promethium and Magnesium


Atomic Structure of Magnesium and Promethium


Atomic Properties

Atomic Number
61   
99+
12   
99+

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

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

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

Atom
  
  

Number of Protons
61   
99+
12   
99+

Number of Neutrons
84   
40
12   
99+

Number of Electrons
61   
99+
12   
99+

Radius of an Atom
  
  

Atomic Radius
183.00 pm   
10
160.00 pm   
27

Covalent Radius
199.00 pm   
12
141.00 pm   
99+

Van der Waals Radius
236.00 pm   
16
173.00 pm   
37

Atomic Weight
145.00 amu   
99+
24.31 amu   
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Neodymium
  
Sodium
  

Next Element
Samarium
  
Aluminium
  

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

Lattice Constant
Not Available   
320.94 pm   
99+

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

Lattice C/A Ratio
Not Available   
Not Available   

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