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Atomic Structure of Einsteinium and Thulium


Atomic Structure of Thulium and Einsteinium


Atomic

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  
10
100  
33

Number of Electrons
99  
19
69  
99+

Radius of an Atom
  
  

Atomic Radius
186.00 pm  
11
176.00 pm  
20

Covalent Radius
186.00 pm  
21
160.00 pm  
32

Van der Waals Radius
0.00 pm  
99+
227.00 pm  
26

Atomic Weight
252.00 amu  
16
168.93 amu  
99+

Atomic Volume
17.04 cm3/mol  
99+
18.10 cm3/mol  
40

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  

Next Element
Fermium
  
Ytterbium
  

Valence Electron Potential
0.00 (-eV)  
99+
49.70 (-eV)  
29

Lattice Constant
582.00 pm  
8
353.75 pm  
99+

Lattice Angles
-  
π/2, π/2, 2 π/3  

Lattice C/A Ratio
1.29  
99+
1.57  
40

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