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Atomic Structure of Beryllium and Barium


Atomic Structure of Barium and Beryllium


Atomic Properties

Atomic Number
4   
99+
56   
99+

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

Crystal Structure
Hexagonal Close Packed (HCP)   
Body Centered Cubic (BCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100   
BCC-Crystal-Structure-.jpg#100   

Atom
  
  

Number of Protons
4   
99+
56   
99+

Number of Neutrons
5   
99+
81   
99+

Number of Electrons
4   
99+
56   
99+

Radius of an Atom
  
  

Atomic Radius
112.00 pm   
99+
222.00 pm   
4

Covalent Radius
96.00 pm   
99+
215.00 pm   
5

Van der Waals Radius
153.00 pm   
99+
268.00 pm   
6

Atomic Weight
9.01 amu   
99+
137.33 amu   
99+

Atomic Volume
5.00 cm3/mol   
99+
39.24 cm3/mol   
5

Adjacent Atomic Numbers
  
  

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Cesium
  

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Sodium
  
Lanthanum
  

Valence Electron Potential
82.00 (-eV)   
15
21.30 (-eV)   
99+

Lattice Constant
228.58 pm   
99+
502.80 pm   
15

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

Lattice C/A Ratio
1.57   
18
Not Available   

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