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Atomic Structure of Calcium and Niobium

Calcium
Niobium
Atomic Structure of Niobium and Calcium


Atomic Properties
Atomic Number
20   
99+
41   
99+
Electron Configuration
[Ar] 4s2   
[Kr] 4d4 5s1   
Crystal Structure
Face Centered Cubic (FCC)   
Body Centered Cubic (BCC)   
Crystal Lattice
FCC-Crystal-Structure-of-Calcium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
20   
99+
41   
99+
Number of Neutrons
20   
99+
52   
99+
Number of Electrons
20   
99+
41   
99+
Radius of an Atom
  
  
Atomic Radius
197.00 pm   
6
146.00 pm   
35
Covalent Radius
176.00 pm   
22
164.00 pm   
28
Van der Waals Radius
231.00 pm   
19
200.00 pm   
28
Atomic Weight
40.08 amu   
99+
92.91 amu   
99+
Atomic Volume
29.90 cm3/mol   
7
10.87 cm3/mol   
99+
Adjacent Atomic Numbers
  
  
Previous Element
Potassium
  
Zirconium
  
Next Element
Scandium
  
Molybdenum
  
Valence Electron Potential
29.00 (-eV)   
99+
104.00 (-eV)   
8
Lattice Constant
558.84 pm   
9
330.04 pm   
99+
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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