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Atomic Structure of Beryllium and Samarium


Atomic Structure of Samarium and Beryllium


Atomic Properties

Atomic Number
4   
99+
62   
99+

Electron Configuration
[He] 2s2   
[Xe] 4f6 6s2   

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

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

Atom
  
  

Number of Protons
4   
99+
62   
99+

Number of Neutrons
5   
99+
88   
39

Number of Electrons
4   
99+
62   
99+

Radius of an Atom
  
  

Atomic Radius
112.00 pm   
99+
180.00 pm   
14

Covalent Radius
96.00 pm   
99+
198.00 pm   
13

Van der Waals Radius
153.00 pm   
99+
229.00 pm   
20

Atomic Weight
9.01 amu   
99+
150.36 amu   
99+

Atomic Volume
5.00 cm3/mol   
99+
19.95 cm3/mol   
19

Adjacent Atomic Numbers
  
  

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Lithium
  
Promethium
  

Next Element
Sodium
  
Europium
  

Valence Electron Potential
82.00 (-eV)   
15
44.80 (-eV)   
37

Lattice Constant
228.58 pm   
99+
362.10 pm   
33

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

Lattice C/A Ratio
1.57   
18
Not Available   

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