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Atomic Structure of Protactinium and Cerium


Atomic Structure of Cerium and Protactinium


Atomic Properties

Atomic Number
91   
27
58   
99+

Electron Configuration
[Rn] 5f2 6d1 7s2   
[Xe] 4f1 5d1 6s2   

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

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

Atom
  
  

Number of Protons
91   
27
58   
99+

Number of Neutrons
122   
21
82   
99+

Number of Electrons
91   
27
58   
99+

Radius of an Atom
  
  

Atomic Radius
163.00 pm   
25
181.80 pm   
12

Covalent Radius
200.00 pm   
11
204.00 pm   
8

Van der Waals Radius
243.00 pm   
11
235.00 pm   
17

Atomic Weight
231.04 amu   
24
140.12 amu   
99+

Atomic Volume
15.00 cm3/mol   
34
20.67 cm3/mol   
17

Adjacent Atomic Numbers
  
  

Previous Element
Thorium
  
Lanthanum
  

Next Element
Uranium
  

Valence Electron Potential
92.00 (-eV)   
11
41.78 (-eV)   
99+

Lattice Constant
392.50 pm   
23
362.00 pm   
34

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

Lattice C/A Ratio
Not Available   
Not Available   

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