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Atomic Structure of Praseodymium and Actinium


Atomic Structure of Actinium and Praseodymium


Atomic Properties

Atomic Number
59   
99+
89   
29

Electron Configuration
[Xe] 4f3 6s2   
[Rn] 6d1 7s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Face Centered Cubic (FCC)   

Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100   
FCC-Crystal-Structure-of-Actinium.jpg#100   

Atom
  
  

Number of Protons
59   
99+
89   
29

Number of Neutrons
82   
99+
138   
16

Number of Electrons
59   
99+
89   
29

Radius of an Atom
  
  

Atomic Radius
182.00 pm   
11
195.00 pm   
7

Covalent Radius
203.00 pm   
9
Not Available   

Van der Waals Radius
239.00 pm   
14
Not Available   

Atomic Weight
140.91 amu   
99+
227.00 amu   
25

Atomic Volume
20.80 cm3/mol   
15
22.54 cm3/mol   
11

Adjacent Atomic Numbers
  
  

Previous Element
Cerium
  
Radium
  

Next Element
Neodymium
  
Thorium
  

Valence Electron Potential
42.64 (-eV)   
99+
38.60 (-eV)   
99+

Lattice Constant
367.25 pm   
29
567.00 pm   
8

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

Lattice C/A Ratio
1.61   
4
Not Available   

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