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Atomic Structure of Californium and Protactinium


Atomic Structure of Protactinium and Californium


Atomic Properties

Atomic Number
98   
20
91   
27

Electron Configuration
[Rn] 5f10 7s2   
[Rn] 5f2 6d1 7s2   

Crystal Structure
Double Hexagonal Close Packed (DHCP)   
Tetragonal (TETR)   

Crystal Lattice
DHCP-Crystal-Structure-of-Californium.jpg#100   
TETR-Crystal-Structure-of-Protactinium.jpg#100   

Atom
  
  

Number of Protons
98   
20
91   
27

Number of Neutrons
153   
9
122   
21

Number of Electrons
98   
20
91   
27

Radius of an Atom
  
  

Atomic Radius
186.00 pm   
9
163.00 pm   
25

Covalent Radius
Not Available   
200.00 pm   
11

Van der Waals Radius
Not Available   
243.00 pm   
11

Atomic Weight
251.00 amu   
17
231.04 amu   
24

Atomic Volume
Not Available   
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

Previous Element
Berkelium
  
Thorium
  

Next Element
Uranium
  

Valence Electron Potential
44.50 (-eV)   
38
92.00 (-eV)   
11

Lattice Constant
338.00 pm   
99+
392.50 pm   
23

Lattice Angles
π/2, π/2, 2 π/3   
π/2, π/2, π/2   

Lattice C/A Ratio
Not Available   
Not Available   

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