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Atomic Structure of Samarium and Holmium


Atomic Structure of Holmium and Samarium


Atomic Properties

Atomic Number
62   
99+
67   
99+

Electron Configuration
[Xe] 4f6 6s2   
[Xe] 4f11 6s2   

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

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

Atom
  
  

Number of Protons
62   
99+
67   
99+

Number of Neutrons
88   
39
98   
34

Number of Electrons
62   
99+
67   
99+

Radius of an Atom
  
  

Atomic Radius
180.00 pm   
14
176.00 pm   
18

Covalent Radius
198.00 pm   
13
192.00 pm   
17

Van der Waals Radius
229.00 pm   
20
216.00 pm   
24

Atomic Weight
150.36 amu   
99+
164.93 amu   
99+

Atomic Volume
19.95 cm3/mol   
19
18.70 cm3/mol   
24

Adjacent Atomic Numbers
  
  

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Promethium
  
Dysprosium
  

Next Element
Europium
  
Erbium
  

Valence Electron Potential
44.80 (-eV)   
37
47.90 (-eV)   
31

Lattice Constant
362.10 pm   
33
357.73 pm   
38

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

Lattice C/A Ratio
Not Available   
1.57   
17

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