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Atomic Structure of Beryllium and Technetium

Beryllium
Technetium
Atomic Structure of Technetium and Beryllium


Atomic Properties
Atomic Number
4   
99+
43   
99+
Electron Configuration
[He] 2s2   
[Kr] 4d5 5s2   
Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100   
HCP-Crystal-Structure-of-Technetium.jpg#100   
Atom
  
  
Number of Protons
4   
99+
43   
99+
Number of Neutrons
5   
99+
55   
99+
Number of Electrons
4   
99+
43   
99+
Radius of an Atom
  
  
Atomic Radius
112.00 pm   
99+
136.00 pm   
99+
Covalent Radius
96.00 pm   
99+
147.00 pm   
37
Van der Waals Radius
153.00 pm   
99+
200.00 pm   
28
Atomic Weight
9.01 amu   
99+
98.00 amu   
99+
Atomic Volume
5.00 cm3/mol   
99+
8.50 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Lithium
  
Molybdenum
  
Next Element
Sodium
  
Ruthenium
  
Valence Electron Potential
82.00 (-eV)   
15
180.00 (-eV)   
3
Lattice Constant
228.58 pm   
99+
273.50 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
1.57   
18
1.60   
5
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