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Atomic Structure of Neodymium and Samarium


Atomic Structure of Samarium and Neodymium


Atomic Properties

Atomic Number
60   
99+
62   
99+

Electron Configuration
[Xe] 4f4 6s2   
[Xe] 4f6 6s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Rhombohedral (RHO)   

Crystal Lattice
DHCP-Crystal-Structure-of-Neodymium.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   

Atom
  
  

Number of Protons
60   
99+
62   
99+

Number of Neutrons
84   
40
88   
39

Number of Electrons
60   
99+
62   
99+

Radius of an Atom
  
  

Atomic Radius
181.00 pm   
13
180.00 pm   
14

Covalent Radius
201.00 pm   
10
198.00 pm   
13

Van der Waals Radius
229.00 pm   
20
229.00 pm   
20

Atomic Weight
144.24 amu   
99+
150.36 amu   
99+

Atomic Volume
20.60 cm3/mol   
18
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

Previous Element
Promethium
  

Next Element
Promethium
  
Europium
  

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

Lattice Constant
365.80 pm   
30
362.10 pm   
33

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

Lattice C/A Ratio
1.61   
4
Not Available   

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