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Atomic Structure of Beryllium and Radium

Beryllium
Radium
Atomic Structure of Radium and Beryllium


Atomic Properties
Atomic Number
4   
99+
88   
30
Electron Configuration
[He] 2s2   
[Rn] 7s2   
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+
88   
30
Number of Neutrons
5   
99+
138   
16
Number of Electrons
4   
99+
88   
30
Radius of an Atom
  
  
Atomic Radius
112.00 pm   
99+
Not Available   
Covalent Radius
96.00 pm   
99+
221.00 pm   
3
Van der Waals Radius
153.00 pm   
99+
283.00 pm   
4
Atomic Weight
9.01 amu   
99+
226.00 amu   
26
Atomic Volume
5.00 cm3/mol   
99+
45.20 cm3/mol   
4
Adjacent Atomic Numbers
  
  
Previous Element
Lithium
  
Francium
  
Next Element
Sodium
  
Actinium
  
Valence Electron Potential
82.00 (-eV)   
15
20.10 (-eV)   
99+
Lattice Constant
228.58 pm   
99+
514.80 pm   
13
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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