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Atomic Structure of Beryllium and Thulium

Beryllium
Thulium
Atomic Structure of Thulium and Beryllium


Atomic
Atomic Number
4  
99+
69  
99+
Electron Configuration
[He] 2s2  
[Xe] 4f13 6s2  
Crystal Structure
Hexagonal Close Packed (HCP)  
Hexagonal Close Packed (HCP)  
Crystal Lattice
HCP-Crystal-Structure-of-Beryllium.jpg#100  
HCP-Crystal-Structure-of-Thulium.jpg#100  
Atom
  
  
Number of Protons
4  
99+
69  
99+
Number of Neutrons
5  
99+
100  
33
Number of Electrons
4  
99+
69  
99+
Radius of an Atom
  
  
Atomic Radius
112.00 pm  
99+
176.00 pm  
20
Covalent Radius
96.00 pm  
99+
160.00 pm  
32
Van der Waals Radius
153.00 pm  
99+
227.00 pm  
26
Atomic Weight
9.01 amu  
99+
168.93 amu  
99+
Atomic Volume
5.00 cm3/mol  
99+
18.10 cm3/mol  
40
Adjacent Atomic Numbers
  
  
Previous Element
Lithium
  
Erbium
  
Next Element
Sodium
  
Ytterbium
  
Valence Electron Potential
82.00 (-eV)  
15
49.70 (-eV)  
29
Lattice Constant
228.58 pm  
99+
353.75 pm  
99+
Lattice Angles
π/2, π/2, π/2  
π/2, π/2, 2 π/3  
Lattice C/A Ratio
1.57  
99+
1.57  
40
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