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Atomic Structure of Radium and Calcium

Radium
Calcium
Atomic Structure of Calcium and Radium


Atomic Properties
Atomic Number
88   
30
20   
99+
Electron Configuration
[Rn] 7s2   
[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
88   
30
20   
99+
Number of Neutrons
138   
16
20   
99+
Number of Electrons
88   
30
20   
99+
Radius of an Atom
  
  
Atomic Radius
Not Available   
197.00 pm   
6
Covalent Radius
221.00 pm   
3
176.00 pm   
22
Van der Waals Radius
283.00 pm   
4
231.00 pm   
19
Atomic Weight
226.00 amu   
26
40.08 amu   
99+
Atomic Volume
45.20 cm3/mol   
4
29.90 cm3/mol   
7
Adjacent Atomic Numbers
  
  
Previous Element
Francium
  
Potassium
  
Next Element
Actinium
  
Scandium
  
Valence Electron Potential
20.10 (-eV)   
99+
29.00 (-eV)   
99+
Lattice Constant
514.80 pm   
13
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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