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Atomic Structure of Thulium and Einsteinium


Atomic Structure of Einsteinium and Thulium


Atomic

Atomic Number
69  
99+
99  
19

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

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

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

Atom
  
  

Number of Protons
69  
99+
99  
19

Number of Neutrons
100  
33
153  
10

Number of Electrons
69  
99+
99  
19

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
186.00 pm  
11

Covalent Radius
160.00 pm  
32
186.00 pm  
21

Van der Waals Radius
227.00 pm  
26
0.00 pm  
99+

Atomic Weight
168.93 amu  
99+
252.00 amu  
16

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

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  

Next Element
Ytterbium
  
Fermium
  

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

Lattice Constant
353.75 pm  
99+
582.00 pm  
8

Lattice Angles
π/2, π/2, 2 π/3  
-  

Lattice C/A Ratio
1.57  
40
1.29  
99+

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