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Atomic Structure of Gadolinium and Samarium


Atomic Structure of Samarium and Gadolinium


Atomic Properties

Atomic Number
64   
99+
62   
99+

Electron Configuration
[Xe] 4f7 5d1 6s2   
[Xe] 4f6 6s2   

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

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

Atom
  
  

Number of Protons
64   
99+
62   
99+

Number of Neutrons
93   
37
88   
39

Number of Electrons
64   
99+
62   
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
180.00 pm   
14

Covalent Radius
196.00 pm   
14
198.00 pm   
13

Van der Waals Radius
237.00 pm   
15
229.00 pm   
20

Atomic Weight
47.87 amu   
99+
150.36 amu   
99+

Atomic Volume
19.90 cm3/mol   
20
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

Previous Element
Europium
  
Promethium
  

Next Element
Terbium
  
Europium
  

Valence Electron Potential
46.10 (-eV)   
34
44.80 (-eV)   
37

Lattice Constant
363.60 pm   
32
362.10 pm   
33

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

Lattice C/A Ratio
1.59   
9
Not Available   

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