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Atomic Structure of Thulium and Yttrium


Atomic Structure of Yttrium and Thulium


Atomic Properties

Atomic Number
69   
99+
39   
99+

Electron Configuration
[Xe] 4f13 6s2   
[Kr] 4d1 5s2   

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

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

Atom
  
  

Number of Protons
69   
99+
39   
99+

Number of Neutrons
100   
32
50   
99+

Number of Electrons
69   
99+
39   
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm   
18
180.00 pm   
14

Covalent Radius
160.00 pm   
30
190.00 pm   
18

Van der Waals Radius
Not Available   
200.00 pm   
28

Atomic Weight
168.93 amu   
99+
88.91 amu   
99+

Atomic Volume
18.10 cm3/mol   
28
19.80 cm3/mol   
21

Adjacent Atomic Numbers
  
  

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Erbium
  
Strontium
  

Next Element
Ytterbium
  
Zirconium
  

Valence Electron Potential
49.70 (-eV)   
28
48.00 (-eV)   
30

Lattice Constant
353.75 pm   
40
364.74 pm   
31

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

Lattice C/A Ratio
1.57   
17
1.57   
16

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