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Atomic Structure of Scandium and Samarium


Atomic Structure of Samarium and Scandium


Atomic Properties

Atomic Number
21   
99+
62   
99+

Electron Configuration
[Ar] 3d1 4s2   
[Xe] 4f6 6s2   

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

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

Atom
  
  

Number of Protons
21   
99+
62   
99+

Number of Neutrons
24   
99+
88   
39

Number of Electrons
21   
99+
62   
99+

Radius of an Atom
  
  

Atomic Radius
162.00 pm   
26
180.00 pm   
14

Covalent Radius
170.00 pm   
25
198.00 pm   
13

Van der Waals Radius
211.00 pm   
25
229.00 pm   
20

Atomic Weight
44.96 amu   
99+
150.36 amu   
99+

Atomic Volume
15.00 cm3/mol   
34
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

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Valence Electron Potential
58.00 (-eV)   
24
44.80 (-eV)   
37

Lattice Constant
330.90 pm   
99+
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   
7
Not Available   

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