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Atomic Structure of Beryllium and 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
  
  

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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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