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Atomic Structure of Protactinium and Fermium


Atomic Structure of Fermium and Protactinium


Atomic Properties

Atomic Number
91   
27
100   
18

Electron Configuration
[Rn] 5f2 6d1 7s2   
[Rn] 5f12 7s2   

Crystal Structure
Tetragonal (TETR)   
Not Known   

Crystal Lattice
TETR-Crystal-Structure-of-Protactinium.jpg#100   
Unknown-Crystal-Structure-of-Fermium.jpg#100   

Atom
  
  

Number of Protons
91   
27
100   
18

Number of Neutrons
122   
21
157   
7

Number of Electrons
91   
27
100   
18

Radius of an Atom
  
  

Atomic Radius
163.00 pm   
25
Not Available   

Covalent Radius
200.00 pm   
11
Not Available   

Van der Waals Radius
243.00 pm   
11
245.00 pm   
9

Atomic Weight
231.04 amu   
24
257.00 amu   
15

Atomic Volume
15.00 cm3/mol   
34
Not Available   

Adjacent Atomic Numbers
  
  

Previous Element
Thorium
  

Next Element
Uranium
  

Valence Electron Potential
92.00 (-eV)   
11
Not Available   

Lattice Constant
392.50 pm   
23
Not Available   

Lattice Angles
π/2, π/2, π/2   
NA   

Lattice C/A Ratio
Not Available   
Not Available   

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