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Atomic Structure of Einsteinium and Thulium


Atomic Structure of Thulium and Einsteinium


Atomic Properties

Atomic Number
99   
19
69   
99+

Electron Configuration
[Rn] 5f11 7s2   
[Xe] 4f13 6s2   

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

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

Atom
  
  

Number of Protons
99   
19
69   
99+

Number of Neutrons
153   
9
100   
32

Number of Electrons
99   
19
69   
99+

Radius of an Atom
  
  

Atomic Radius
186.00 pm   
9
176.00 pm   
18

Covalent Radius
Not Available   
160.00 pm   
30

Atomic Weight
252.00 amu   
16
168.93 amu   
99+

Atomic Volume
Not Available   
18.10 cm3/mol   
28

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  

Next Element
Fermium
  
Ytterbium
  

Valence Electron Potential
Not Available   
49.70 (-eV)   
28

Lattice Constant
Not Available   
353.75 pm   
40

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

Lattice C/A Ratio
Not Available   
1.57   
17

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