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Atomic Structure of Barium and Samarium


Atomic Structure of Samarium and Barium


Atomic Properties

Atomic Number
56   
99+
62   
99+

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

Crystal Structure
Body Centered Cubic (BCC)   
Rhombohedral (RHO)   

Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
RHO-Crystal-Structure-of-Samarium.jpg#100   

Atom
  
  

Number of Protons
56   
99+
62   
99+

Number of Neutrons
81   
99+
88   
39

Number of Electrons
56   
99+
62   
99+

Radius of an Atom
  
  

Atomic Radius
222.00 pm   
4
180.00 pm   
14

Covalent Radius
215.00 pm   
5
198.00 pm   
13

Van der Waals Radius
268.00 pm   
6
229.00 pm   
20

Atomic Weight
137.33 amu   
99+
150.36 amu   
99+

Atomic Volume
39.24 cm3/mol   
5
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

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Cesium
  
Promethium
  

Next Element
Lanthanum
  
Europium
  

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

Lattice Constant
502.80 pm   
15
362.10 pm   
33

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

Lattice C/A Ratio
Not Available   
Not Available   

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