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Atomic Structure of Magnesium and Samarium


Atomic Structure of Samarium and Magnesium


Atomic Properties

Atomic Number
12   
99+
62   
99+

Electron Configuration
[Ne] 3s2   
[Xe] 4f6 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Rhombohedral (RHO)   

Crystal Lattice
HCP-Crystal-Structure-of-Magnesium.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   

Atom
  
  

Number of Protons
12   
99+
62   
99+

Number of Neutrons
12   
99+
88   
39

Number of Electrons
12   
99+
62   
99+

Radius of an Atom
  
  

Atomic Radius
160.00 pm   
27
180.00 pm   
14

Covalent Radius
141.00 pm   
99+
198.00 pm   
13

Van der Waals Radius
173.00 pm   
37
229.00 pm   
20

Atomic Weight
24.31 amu   
99+
150.36 amu   
99+

Atomic Volume
13.97 cm3/mol   
37
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

Previous Element
Sodium
  
Promethium
  

Next Element
Aluminium
  
Europium
  

Valence Electron Potential
40.00 (-eV)   
99+
44.80 (-eV)   
37

Lattice Constant
320.94 pm   
99+
362.10 pm   
33

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

Lattice C/A Ratio
Not Available   
Not Available   

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