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Atomic Structure of Calcium and Thallium

Calcium
Thallium
Atomic Structure of Thallium and Calcium


Atomic Properties
Atomic Number
20   
99+
81   
35
Electron Configuration
[Ar] 4s2   
[Xe] 4f14 5d10 6s2 6p1   
Crystal Structure
Face Centered Cubic (FCC)   
Hexagonal Close Packed (HCP)   
Crystal Lattice
FCC-Crystal-Structure-of-Calcium.jpg#100   
BCC-Crystal-Structure-.jpg#100   
Atom
  
  
Number of Protons
20   
99+
81   
35
Number of Neutrons
20   
99+
123   
20
Number of Electrons
20   
99+
81   
35
Radius of an Atom
  
  
Atomic Radius
197.00 pm   
6
170.00 pm   
22
Covalent Radius
176.00 pm   
22
145.00 pm   
39
Van der Waals Radius
231.00 pm   
19
196.00 pm   
30
Atomic Weight
40.08 amu   
99+
204.38 amu   
31
Atomic Volume
29.90 cm3/mol   
7
17.20 cm3/mol   
31
Adjacent Atomic Numbers
  
  
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Potassium
  
Mercury
  
Next Element
Scandium
  
Lead
  
Valence Electron Potential
29.00 (-eV)   
99+
9.60 (-eV)   
99+
Lattice Constant
558.84 pm   
9
345.66 pm   
99+
Lattice Angles
π/2, π/2, π/2   
π/2, π/2, 2 π/3   
Lattice C/A Ratio
Not Available   
1.60   
6
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