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Atomic Structure of Calcium and Praseodymium


Atomic Structure of Praseodymium and Calcium


Atomic Properties

Atomic Number
20   
99+
59   
99+

Electron Configuration
[Ar] 4s2   
[Xe] 4f3 6s2   

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

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

Atom
  
  

Number of Protons
20   
99+
59   
99+

Number of Neutrons
20   
99+
82   
99+

Number of Electrons
20   
99+
59   
99+

Radius of an Atom
  
  

Atomic Radius
197.00 pm   
6
182.00 pm   
11

Covalent Radius
176.00 pm   
22
203.00 pm   
9

Van der Waals Radius
231.00 pm   
19
239.00 pm   
14

Atomic Weight
40.08 amu   
99+
140.91 amu   
99+

Atomic Volume
29.90 cm3/mol   
7
20.80 cm3/mol   
15

Adjacent Atomic Numbers
  
  

Previous Element
Potassium
  
Cerium
  

Next Element
Scandium
  
Neodymium
  

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

Lattice Constant
558.84 pm   
9
367.25 pm   
29

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

Lattice C/A Ratio
Not Available   
1.61   
4

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