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Atomic Structure of Beryllium and Actinium

Beryllium
Actinium
Atomic Structure of Actinium and Beryllium


Atomic Properties
Atomic Number
4   
99+
89   
29
Electron Configuration
[He] 2s2   
[Rn] 6d1 7s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   
Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100   
FCC-Crystal-Structure-of-Actinium.jpg#100   
Atom
  
  
Number of Protons
4   
99+
89   
29
Number of Neutrons
5   
99+
138   
16
Number of Electrons
4   
99+
89   
29
Radius of an Atom
  
  
Atomic Radius
112.00 pm   
99+
195.00 pm   
7
Covalent Radius
96.00 pm   
99+
Not Available   
Van der Waals Radius
153.00 pm   
99+
Not Available   
Atomic Weight
9.01 amu   
99+
227.00 amu   
25
Atomic Volume
5.00 cm3/mol   
99+
22.54 cm3/mol   
11
Adjacent Atomic Numbers
  
  
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Lithium
  
Radium
  
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Sodium
  
Thorium
  
Valence Electron Potential
82.00 (-eV)   
15
38.60 (-eV)   
99+
Lattice Constant
228.58 pm   
99+
567.00 pm   
8
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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