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Atomic Structure of Thulium and Beryllium


Atomic Structure of Beryllium and Thulium


Atomic

Atomic Number
69  
99+
4  
99+

Electron Configuration
[Xe] 4f13 6s2  
[He] 2s2  

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

Crystal Lattice
HCP-Crystal-Structure-of-Thulium.jpg#100  
HCP-Crystal-Structure-of-Beryllium.jpg#100  

Atom
  
  

Number of Protons
69  
99+
4  
99+

Number of Neutrons
100  
33
5  
99+

Number of Electrons
69  
99+
4  
99+

Radius of an Atom
  
  

Atomic Radius
176.00 pm  
20
112.00 pm  
99+

Covalent Radius
160.00 pm  
32
96.00 pm  
99+

Van der Waals Radius
227.00 pm  
26
153.00 pm  
99+

Atomic Weight
168.93 amu  
99+
9.01 amu  
99+

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

Adjacent Atomic Numbers
  
  

Previous Element
Erbium
  
Lithium
  

Next Element
Ytterbium
  
Sodium
  

Valence Electron Potential
49.70 (-eV)  
29
82.00 (-eV)  
15

Lattice Constant
353.75 pm  
99+
228.58 pm  
99+

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

Lattice C/A Ratio
1.57  
40
1.57  
99+

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