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Atomic Structure of Europium and Calcium

Europium
Calcium
Atomic Structure of Calcium and Europium


Atomic Properties
Atomic Number
63   
99+
20   
99+
Electron Configuration
[Xe] 4f7 6s2   
[Ar] 4s2   
Crystal Structure
Body Centered Cubic (BCC)   
Face Centered Cubic (FCC)   
Crystal Lattice
BCC-Crystal-Structure-.jpg#100   
FCC-Crystal-Structure-of-Calcium.jpg#100   
Atom
  
  
Number of Protons
63   
99+
20   
99+
Number of Neutrons
89   
38
20   
99+
Number of Electrons
63   
99+
20   
99+
Radius of an Atom
  
  
Atomic Radius
180.00 pm   
14
197.00 pm   
6
Covalent Radius
198.00 pm   
13
176.00 pm   
22
Van der Waals Radius
233.00 pm   
18
231.00 pm   
19
Atomic Weight
151.96 amu   
99+
40.08 amu   
99+
Atomic Volume
28.90 cm3/mol   
8
29.90 cm3/mol   
7
Adjacent Atomic Numbers
  
  
Previous Element
Samarium
  
Potassium
  
Next Element
Gadolinium
  
Scandium
  
Valence Electron Potential
45.60 (-eV)   
35
29.00 (-eV)   
99+
Lattice Constant
458.10 pm   
17
558.84 pm   
9
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, π/2   
Lattice C/A Ratio
Not Available   
Not Available   
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