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Atomic Structure of Beryllium and Protactinium


Atomic Structure of Protactinium and Beryllium


Atomic Properties

Atomic Number
4   
99+
91   
27

Electron Configuration
[He] 2s2   
[Rn] 5f2 6d1 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Tetragonal (TETR)   

Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
4   
99+
91   
27

Number of Neutrons
5   
99+
122   
21

Number of Electrons
4   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
112.00 pm   
99+
163.00 pm   
25

Covalent Radius
96.00 pm   
99+
200.00 pm   
11

Van der Waals Radius
153.00 pm   
99+
243.00 pm   
11

Atomic Weight
9.01 amu   
99+
231.04 amu   
24

Atomic Volume
5.00 cm3/mol   
99+
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

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Valence Electron Potential
82.00 (-eV)   
15
92.00 (-eV)   
11

Lattice Constant
228.58 pm   
99+
392.50 pm   
23

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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