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Atomic Structure of Cerium and Protactinium


Atomic Structure of Protactinium and Cerium


Atomic Properties

Atomic Number
58   
99+
91   
27

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

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

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

Atom
  
  

Number of Protons
58   
99+
91   
27

Number of Neutrons
82   
99+
122   
21

Number of Electrons
58   
99+
91   
27

Radius of an Atom
  
  

Atomic Radius
181.80 pm   
12
163.00 pm   
25

Covalent Radius
204.00 pm   
8
200.00 pm   
11

Van der Waals Radius
235.00 pm   
17
243.00 pm   
11

Atomic Weight
140.12 amu   
99+
231.04 amu   
24

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

Adjacent Atomic Numbers
  
  

Previous Element
Lanthanum
  
Thorium
  

Next Element
Uranium
  

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

Lattice Constant
362.00 pm   
34
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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