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Atomic Structure of Thulium and Scandium


Atomic Structure of Scandium and Thulium


Atomic Properties

Atomic Number
69   
99+
21   
99+

Electron Configuration
[Xe] 4f13 6s2   
[Ar] 3d1 4s2   

Crystal Structure
Hexagonal Close Packed (HCP)   
Hexagonal Close Packed (HCP)   

Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100   
HCP-Crystal-Structure-of-Scandium.jpg#100   

Atom
  
  

Number of Protons
69   
99+
21   
99+

Number of Neutrons
100   
32
24   
99+

Number of Electrons
69   
99+
21   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
162.00 pm   
26

Covalent Radius
160.00 pm   
30
170.00 pm   
25

Van der Waals Radius
Not Available   
211.00 pm   
25

Atomic Weight
168.93 amu   
99+
44.96 amu   
99+

Atomic Volume
18.10 cm3/mol   
28
15.00 cm3/mol   
34

Adjacent Atomic Numbers
  
  

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Erbium
  
Calcium
  

Next Element
Ytterbium
  
Titanium
  

Valence Electron Potential
49.70 (-eV)   
28
58.00 (-eV)   
24

Lattice Constant
353.75 pm   
40
330.90 pm   
99+

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

Lattice C/A Ratio
1.57   
17
1.59   
7

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