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Atomic Structure of Cerium and Thulium


Atomic Structure of Thulium and Cerium


Atomic Properties

Atomic Number
58   
99+
69   
99+

Electron Configuration
[Xe] 4f1 5d1 6s2   
[Xe] 4f13 6s2   

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

Crystal Lattice
DHCP-Crystal-Structure-of-Cerium.jpg#100   
HCP-Crystal-Structure-of-Thulium.jpg#100   

Atom
  
  

Number of Protons
58   
99+
69   
99+

Number of Neutrons
82   
99+
100   
32

Number of Electrons
58   
99+
69   
99+

Radius of an Atom
  
  

Atomic Radius
181.80 pm   
12
176.00 pm   
18

Covalent Radius
204.00 pm   
8
160.00 pm   
30

Van der Waals Radius
235.00 pm   
17
Not Available   

Atomic Weight
140.12 amu   
99+
168.93 amu   
99+

Atomic Volume
20.67 cm3/mol   
17
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

Previous Element
Lanthanum
  
Erbium
  

Next Element
Ytterbium
  

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

Lattice Constant
362.00 pm   
34
353.75 pm   
40

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

Lattice C/A Ratio
Not Available   
1.57   
17

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