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Atomic Structure of Thulium and Mendelevium


Atomic Structure of Mendelevium and Thulium


Atomic

Atomic Number
69  
99+
101  
17

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

Crystal Structure
Hexagonal Close Packed (HCP)  
Not Known  

Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100  
Unknown-Crystal-Structure-of-Mendelevium.jpg#100  

Atom
  
  

Number of Protons
69  
99+
101  
17

Number of Neutrons
100  
33
157  
8

Number of Electrons
69  
99+
101  
17

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
175.00 pm  
21

Covalent Radius
160.00 pm  
32
175.00 pm  
25

Van der Waals Radius
227.00 pm  
26
246.00 pm  
12

Atomic Weight
168.93 amu  
99+
258.00 amu  
14

Atomic Volume
18.10 cm3/mol  
40
19.90 cm3/mol  
32

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  
Fermium
  

Next Element
Ytterbium
  
Nobelium
  

Valence Electron Potential
49.70 (-eV)  
29
63.70 (-eV)  
23

Lattice Constant
353.75 pm  
99+
-  

Lattice Angles
π/2, π/2, 2 π/3  
-  

Lattice C/A Ratio
1.57  
40
1.58  
36

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