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Atomic Structure of Calcium and Thulium


Atomic Structure of Thulium and Calcium


Atomic Properties

Atomic Number
20   
99+
69   
99+

Electron Configuration
[Ar] 4s2   
[Xe] 4f13 6s2   

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

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

Atom
  
  

Number of Protons
20   
99+
69   
99+

Number of Neutrons
20   
99+
100   
32

Number of Electrons
20   
99+
69   
99+

Radius of an Atom
  
  

Atomic Radius
197.00 pm   
6
176.00 pm   
18

Covalent Radius
176.00 pm   
22
160.00 pm   
30

Van der Waals Radius
231.00 pm   
19
Not Available   

Atomic Weight
40.08 amu   
99+
168.93 amu   
99+

Atomic Volume
29.90 cm3/mol   
7
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

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Potassium
  
Erbium
  

Next Element
Scandium
  
Ytterbium
  

Valence Electron Potential
29.00 (-eV)   
99+
49.70 (-eV)   
28

Lattice Constant
558.84 pm   
9
353.75 pm   
40

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

Lattice C/A Ratio
Not Available   
1.57   
17

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