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Atomic Structure of Praseodymium and Lanthanum


Atomic Structure of Lanthanum and Praseodymium


Atomic Properties

Atomic Number
59   
99+
57   
99+

Electron Configuration
[Xe] 4f3 6s2   
[Xe] 5d2 6s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Double Hexagonal Close Packed (DHCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Praseodymium.jpg#100   
DHCP-Crystal-Structure-of-Lanthanum.jpg#100   

Atom
  
  

Number of Protons
59   
99+
57   
99+

Number of Neutrons
82   
99+
82   
99+

Number of Electrons
59   
99+
57   
99+

Radius of an Atom
  
  

Atomic Radius
182.00 pm   
11
187.00 pm   
8

Covalent Radius
203.00 pm   
9
207.00 pm   
6

Van der Waals Radius
239.00 pm   
14
240.00 pm   
13

Atomic Weight
140.91 amu   
99+
138.91 amu   
99+

Atomic Volume
20.80 cm3/mol   
15
20.73 cm3/mol   
16

Adjacent Atomic Numbers
  
  

Previous Element
Cerium
  
Barium
  

Next Element
Neodymium
  
Cerium
  

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

Lattice Constant
367.25 pm   
29
377.20 pm   
28

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

Lattice C/A Ratio
1.61   
4
1.62   
2

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