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Atomic Structure of Beryllium and Potassium

Beryllium
Potassium
Atomic Structure of Potassium and Beryllium


Atomic Properties
Atomic Number
4   
99+
19   
99+
Electron Configuration
[He] 2s2   
[Ar] 4s1   
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+
19   
99+
Number of Neutrons
5   
99+
20   
99+
Number of Electrons
4   
99+
19   
99+
Radius of an Atom
  
  
Atomic Radius
112.00 pm   
99+
227.00 pm   
3
Covalent Radius
96.00 pm   
99+
203.00 pm   
9
Van der Waals Radius
153.00 pm   
99+
275.00 pm   
5
Atomic Weight
9.01 amu   
99+
39.10 amu   
99+
Atomic Volume
5.00 cm3/mol   
99+
45.46 cm3/mol   
3
Adjacent Atomic Numbers
  
  
Previous Element
Lithium
  
Aluminium
  
Next Element
Sodium
  
Calcium
  
Valence Electron Potential
82.00 (-eV)   
15
10.40 (-eV)   
99+
Lattice Constant
228.58 pm   
99+
532.80 pm   
12
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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