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Atomic Structure of Thulium and Yttrium


Atomic Structure of Yttrium and Thulium


Atomic

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  
33
50  
99+

Number of Electrons
69  
99+
39  
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
180.00 pm  
16

Covalent Radius
160.00 pm  
32
190.00 pm  
18

Van der Waals Radius
227.00 pm  
26
200.00 pm  
35

Atomic Weight
168.93 amu  
99+
88.91 amu  
99+

Atomic Volume
18.10 cm3/mol  
40
19.80 cm3/mol  
33

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  
Strontium
  

Next Element
Ytterbium
  
Zirconium
  

Valence Electron Potential
49.70 (-eV)  
29
48.00 (-eV)  
31

Lattice Constant
353.75 pm  
99+
364.74 pm  
34

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

Lattice C/A Ratio
1.57  
40
1.57  
39

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