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Atomic Structure of Francium and Samarium


Atomic Structure of Samarium and Francium


Atomic Properties

Atomic Number
87   
31
62   
99+

Electron Configuration
[Rn] 7s1   
[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
87   
31
62   
99+

Number of Neutrons
136   
17
88   
39

Number of Electrons
87   
31
62   
99+

Radius of an Atom
  
  

Atomic Radius
Not Available   
180.00 pm   
14

Covalent Radius
260.00 pm   
1
198.00 pm   
13

Van der Waals Radius
348.00 pm   
1
229.00 pm   
20

Atomic Weight
223.00 amu   
27
150.36 amu   
99+

Atomic Volume
Not Available   
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

Previous Element
Polonium
  
Promethium
  

Next Element
Radium
  
Europium
  

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

Lattice Constant
Not Available   
362.10 pm   
33

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

Lattice C/A Ratio
Not Available   
Not Available   

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