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Atomic Structure of Samarium and Calcium


Atomic Structure of Calcium and Samarium


Atomic Properties

Atomic Number
62   
99+
20   
99+

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

Crystal Structure
Rhombohedral (RHO)   
Face Centered Cubic (FCC)   

Crystal Lattice
RHO-Crystal-Structure-of-Samarium.jpg#100   
FCC-Crystal-Structure-of-Calcium.jpg#100   

Atom
  
  

Number of Protons
62   
99+
20   
99+

Number of Neutrons
88   
39
20   
99+

Number of Electrons
62   
99+
20   
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
197.00 pm   
6

Covalent Radius
198.00 pm   
13
176.00 pm   
22

Van der Waals Radius
229.00 pm   
20
231.00 pm   
19

Atomic Weight
150.36 amu   
99+
40.08 amu   
99+

Atomic Volume
19.95 cm3/mol   
19
29.90 cm3/mol   
7

Adjacent Atomic Numbers
  
  

Previous Element
Promethium
  
Potassium
  

Next Element
Europium
  
Scandium
  

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

Lattice Constant
362.10 pm   
33
558.84 pm   
9

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

Lattice C/A Ratio
Not Available   
Not Available   

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